Binocular Magnification and Aperture Explained

Binoculars are used for everything from birdwatching to getting a closer look at lunar surfaces. There are many manufacturers of binoculars, and their quality can vary greatly from one brand to the next as well as from one model to the next. Before understanding the finer points of the best optical elements and coatings suited for specific uses, it is important to understand binocular magnification and aperture to determine which type is needed for the jobs the binoculars will be expected to perform.

Binocular Numbers

Two numbers are used to designate the power of binoculars. They are written with the letter “X” in between them. The number before the X is related to magnification. It is the number of times closer an object will appear in the field of view of the binoculars as opposed to viewing it with the naked eye. The second number is the aperture measured in millimeters. This refers to the width of what is called the objective lens. It is the big lens of binoculars and is important for capturing light coming from objects. Both work together to produce binoculars that are suited for tasks such as watching a sporting event or sky-watching at night.

Binocular Magnification

There is more to choosing the magnification power of binoculars than just picking the largest number before the X. A 7X magnification power means that an object viewed through the binoculars appears seven times closer. As the magnification increases, the field of view decreases. Magnification can get to be unwieldy in keeping viewed objects steady in the viewfinder. At larger magnifications, a tripod or other steady mount is needed just to keep objects from bouncing around when they are viewed. The slightest movement at high magnification powers results in large movements of an object being viewed through binoculars. A compromise must be made between being able to easily hold an object in view and getting the desired object close enough to be examined or identified.

Binocular Aperture

The aperture is the width of the front, or objective lens, of binoculars, measured in millimeters. Wider lenses have greatly increased total surface area. This is important for gathering the light that makes objects viewable, especially in dim light. Larger lenses can bring in more light to strike the ocular magnification lenses. These are the lenses one looks through when using binoculars. Bigger aperture objective lenses need bigger binocular housings, but larger binoculars do not mean more magnification power. Larger binocular apertures are needed for viewing objects in dim light. This could be game animals at dawn or dusk, or celestial objects throughout the night sky. At the same magnification, a larger aperture makes objects brighter when viewed through binoculars.

Field of View

As magnification increases, the field of view diminishes. Imagine viewing the 50-yard line of a football field from the bleachers to help understand field of view. As the magnification increases, the yard lines toward each goal post would disappear from the field of view when fixed on the 50-yard line. Increasing magnification brings objects on the field closer, but the area around the object being viewed gets smaller and smaller. High magnification can make distant objects appear much closer, but there must be a compromise depending on intended use. Binoculars with magnification that can get in close and tight to identify a small animal may be useless when glassing larger areas to identify landmarks or for search and rescue.

Balancing Magnification and Aperture

An important part in making a choice for what type of binoculars to buy is to decide what they will be used to view. It may be impossible to find one pair of binoculars that are suitable for all viewing occasions. Foe example, it would be a disappointment to attempt a bird-watching hike with a pair of binoculars of large aperture and high magnification normally used to view dim night sky objects. The binoculars would be too heavy to hold for long viewing periods in the field. Also, high magnification would make it difficult to find and track birds in trees. On the other hand, field binoculars that are recommended for birding do not have the light gathering capabilities needed to view faint galaxies in the night sky.

Variable Magnification Binoculars

Photography buffs know the value of prime lenses over variable (zoom) lenses. Prime lenses are of a fixed focal length. Zoom lenses can have their magnification changed at the turn of a dial or the press of a button. However, a certain degree of optical clarity and sharpness are compromised with variable focal length lenses. The same goes for binoculars that have variable magnification. Also, just as in photographic lenses, variable power binoculars can be much more expensive, especially for superior quality glass elements used in their construction. It may be better to buy two or more binoculars of a fixed power and aperture than to get one inferior variable power pair of binoculars.

It is important for those interested in purchasing the best pair of binoculars to consider what they will be used for. The service they will be put into is a great help in determining the appropriate magnification power and aperture size. More magnification and bigger apertures are not always the best. A pair of 7X20 binoculars can fit in a backpack or glove compartment. An 8×20 would increase magnification, keeping the binoculars the same general size. Increasing the aperture to an 8X42 size would make them much larger and heavier with no increase in magnification, but they would present a brighter image. Looking at the binocular size choices used by experts in birding, astronomy, hunting or whatever field the binoculars will be used in is helpful.

How to Clean Binoculars and their Lenses

Keeping your binoculars clean helps them last longer, and doing it properly ensures you have clear images.

The first thing you should do before cleaning your binoculars is look at the user manual. They often have recommendations for what tools to use or what chemicals to avoid on your lenses. Binocular lenses have different coatings, and manufacturers will know what chemicals harm the coating on your lenses.

After checking the user manual, there are four steps you can follow to clean your binoculars.

1: Brush dirt and dust off the lenses

One very important thing to remember is never rub dirt or dust off your lenses. Rubbing dirt off will cause microscopic scratches on your lenses. You won’t be able to see those scratches, but they scatter light. Over time that will add up to make your image cloudy. You may be tempted to use a soft microfiber cloth to clean the dust, but even that will rub the dust on the lens to create scratches.

Holding the binoculars upside down, use a lens cleaning pen with a soft brush or canned air from an office store to brush the dust off. If you use canned air, be sure to use short bursts of the air. The drastic temperature changes can cause damage to the lens. Don’t breathe or huff on your lens to remove dust. The water particles in your breath will spot your lens and possibly make it more dirty than before.

2: Use a cotton swab moistened with water or lens cleaning solution to wipe away any remaining grime.

Never use window or glasses cleaner on your binocular lenses. They contain chemicals that can damage the coating on your lenses. Don’t pour the lens cleaning solution directly on the lens. It can seep through the edges and cause damage inside the binoculars. If you have waterproof binoculars, you can run the lens directly under tap water. Be sure to use a light stream with less pressure. Remember to take care with damp binoculars. Don’t store them until they’re dry, and don’t put caps over damp lenses.

3: Use a soft, lent-free cotton cloth, microfiber cloth, or special lens tissue to wipe away smudges.

Never use a paper towel or face tissue. They’re made of woody particles that are too rough on your lens and will scratch it. Don’t use your shirt or other clothing you wear either. Those can be too rough or have dirt and dust on them. Make sure to store your cleaning cloth in a safe container where it won’t get dust or other substances on it.

Be gentle and don’t apply pressure when touching the lenses. You can put a little lens cleaner on the cloth if the smudge is still refusing to come off. Wipe in circular motions from the middle outward.

4: After you’ve cleaned your lenses, you can wipe down the body of your binoculars with a soft cloth to remove dirt or other grime. If you have removable eye cups, be sure to take them off to wipe them.

Don’t dismantle your binoculars when cleaning them. You may ruin the optic alignment. If there is something on the inside of your binoculars, take them to a professional.

Don’t touch your lenses with your fingers. Not only may your fingers be dirty, the natural oils on them could break down the coating on your lens.

Cleaning your binoculars is very important to keep them in good shape, but if you over-clean them, you may damage them. Only clean your lenses when there is something on them.

Top 13 Sites any Binoculars Fanatic or Critic Should Visit

In an age where technology is advancing rapidly, manufacturers are constantly churning out new products. It can be difficult to keep up with what is new to market.

I mean think about it; was there ever a time when you wanted to buy a product, but there were so many choices that you had no idea where to start? Or maybe you went off a recommendation from a friend to buy this or don’t buy that. Then when you began researching, you get mixed reviews.

I have been in the Optics business for some time now, and within the last couple of years this couldn’t be more true. If I want to keep up with the times and be on top of my game I have to do a lot of research. To do this, I turned to other Optics sites for information beyond just my personal observations. I have compiled a list of the top sites to visit to get the best reviews on Binoculars!

The Binocular Site

URL: http://www.thebinocularsite.com

The Binocular site is one of the top sites that I research because they are not manufacturers or vendors for binoculars. That way you know 100% that the reviews are unbiased. Also their reviews are not based on any particular hobby this way you know you are getting a full spec review. Another great thing they offer is a comprehensive overview on the world of binoculars, with pages covering everything from beginner to obscure models and uses.

allbinos.com

URL: http://www.allbinos.com

Allbinos.com does a fantastic job of making their site very straight forward but without sparing any of the important details. The site is divided by the title of the Binocular you are looking for. That way you can just click into what you want instead of searching around. Honestly it cannot get more simple than that. Now here is where the complexity comes in, once you get into the review there is tons of information to read through. Although if you want detailed information then it will be worth the time.

OPTICSREVIEWER

URL: http://www.opticsreviewer.com

If you are someone who is really into your hobby but does not exactly know all of the gargin when it comes to the specs. This site is my #1 choice for you. OpticsReviewer will purchase the binoculars and write reviews based on what they experienced. Another fantastic feature they have is a great article called top 7 easy tips to picking the best binoculars for you. This is so important because not every time do you know exactly what kind you should be looking for.

OutdoorLife.com

URL: http://www.outdoorlife.com/features/gun-and-optics-test/intro

One of the main reason that I really like this site for a great review on Binoculars is the fact of how simple it is. To their point they state that all Binoculars are simply designed to magnify distant objects while remaining as light and portable as possible. And that is how they keep their reviews simple but to the point. The way the divide up the reviews is based on editors choice, great buy, size mid and full size. Also the further down you scroll they give you a comparison table so you can see the specs of each laid out.

Customersearch

URL: http://www.consumersearch.com/binoculars

This site is very different from the rest. Unlike the other sites customer search is not a binocular site, a hunting site, or even an optics site. It is a site that consumers can use as a resource to research products and brands to find the best option for them. They base their binocular reviews completely on the optics and how it performs. They lay out their top reviews, but also provide detailed information below as well as a compare products feature.

EZvid.com

URL: https://www.ezvid.com/top-10-binoculars

EZvid is known for being a site that specializes in making top 10 list of all kinds of products. They spend countless amounts of hours researching, videography, and editing to write their reviews. So when they are writing a review you how they have countless hours or research to back it up. They leave the reviews pretty simple but you can always read into the particular brand you are looking for most. Some of the binoculars also have links to where you can purchase the product.

Smart Review

URL: http://www.smartreview.com/image-stabilized-binoculars-comparison

Smart review is like a site I had mentioned before where it writes reviews with all kinds of products. The one difference with this one here is that they provide more categories that you can read reviews on. As some of you may know Binoculars have all kinds of different specs depending on what you are using them for. If you are the kind of person who knows and exact specification that you are looking for you can find that here. They separate out the review articles for each specialty. That way all the products you are reading about have what you are looking for.

Toppers World

URL: http://toppersworld.com/top-10-best-selling-compact-binoculars-reviews/

If you are looking for a site that knows how complex it can be to choose a product when there are so many kinds to look at. Toppers world is just for you, they know the importance of Binoculars for any camper or adventurer. And that is why they make sure that their reviews reflect the important features that any consumer would be looking for. It is not overloaded with too much information just what you need to know. This will make your next binocular purchase easy!

The Binoculars Guy

URL: http://thebinocularsguy.com/best-hunting-binoculars/

If you couldn’t already tell by the name this guy knows his stuff. One of the things that is really great about his site is that he breaks up the reviews into different categories. As we all know there are different specs that you are looking for in a binocular depending on our hobby. His reviews also keep it simple and list the needed information for what your needs are. And if the technical terms are too much for you he even provides you a table of contents (now that is a first). For each category there are only 3 binoculars to review, and tells you why those 3 are the best!

Hunting Binoculars Guide

URL: http://huntingbinocularsguide.com

The hunting binoculars guide is exactly like it sounds a site that just reviews binoculars that every hunter would want. So if hunting is what you need binoculars for, do not look any further. The way they laid out the site is really neat. They only showcase 10 different options so that you have a good variety but not to much that it gets overwhelming. One thing that I found really great is they have a small description about the binocular they listed, which just provides the information that you need to know. If you want more information through they do provide a Read our Review button so that you can find out how it really pans out. On top of that if you think that you have found the right one, they provide a link right on the review that will take you right to where you can purchase!

Artifact Outfitters

URL: http://www.bestforhunting.com/best-binoculars-for-hunting/

Artifact Outfitters is a great go to site for anything hunting that you want to know. Weather it is hunting information or reviews on a lot of products. One thing I truly like about the site is the reviews. Something really great that they do is they break up their reviews into price ranges. The last thing you would want to do is read a review love the product to then find out it is way out of your price range. They start around the $200 range and go as high as $2500. And in each range they give anywhere from 2-4 products that you can look at, and even buy if you want to.

Hunting For Binoculars

URL: http://www.huntingforbinoculars.net/best-binoculars-for-birding/

Unlike any of the other sites this site actually has a video that talks and goes through the specs of the specific binoculars they have reviews for on the site. On top of that they provide a list of all the binoculars that are best for birding (which can also be good for hunting). And if you want to get more information they have sections where you can find out more information on specific specs and all the binoculars that are best for that specific one. They give you so much information that after you are done reading through, you should know exactly what binocular you want!

Optics Den

URL: https://www.opticsden.com/reviews-of-the-best-binoculars/

Saving the best for last (although we’re admittedly biased). Here on Optics Den, we’ve written reviews for hundreds of sporting optics, as well as put together buying guides and other great content related to sporting optics. The article linked to above is a guide to buying binoculars, and it will serve you well if you are looking to buy a pair for hunting, birding, or any other activity.

Feeders and Fixin’s for Birdwatching in Your Backyard

The best place to start your birdwatching hobby is in your own backyard. Whether you design perennial beds in suburbia or turn over the back forty with country pleasure – there are birds in them there hills!  Birds really are everywhere and they are just waiting to be found. All you have to do is look and listen.

 

Attracting species to your viewing area is easy. Just set out some “habitat” and “necessities” and the birds will be flying in.

 

Backyard Birding Ideas

optics den birding binoculars 3

credit – johnmorlu.com

Bird feeders and accessories are readily available. You can visit your local hardware store, grain supply store, garden center or visit a specialty bird supply store. Choose from the wide variety of bird feeders and which material suits your weather or feeding needs.

 

Materials: Feeders come in glass, recycled plastics, metal, traditional wood and combinations of these. Weight will be an issue. A heavy feeder with a volume allowance for 5 pounds of seed will require a sturdy mounting pole or branch (weather and wind will increase the effects). Remember that inexpensive plastic versions will fade, crack and discolor. Squirrels will chew wood and thin plastics.

 

Note: Quality plastic feeders are crafted to resemble faux-wood – they are fade resistant and ready to stand up to gnawing squirrels.

 

You may also want to consider suet combo feeders, nut feeders, sunflower trays and mixed seed tubes. Select a feeder that will last many seasons, as the cheapest isn’t always the best type to buy.  Combination, or all-in-one stations, tend to be much more expensive. Plus, if suet cages are fixed to the feeder, this will make cleaning the station a chore. Cheaper really is better! Buy two separate feeders – the suet cage and the seed feeder – for a frugal purchase that requires less maintenance.

 

optics den birding binoculars 4The first consideration will be to determine what bird species visit your area.  Consult your bird guides or check out websites like the National Audubon Society’s (don’t forget to search through your local Audubon chapter’s website) or the University of Wisconsin: http://learningstore.uwex.edu/assets/pdfs/G3176.PDF.

 

Cornell’s Ornithology Lab has a fun and interactive bird identification guide (with songs included) – http://www.allaboutbirds.org/guide/search.aspx.

 

Spend time sitting in your yard, or watching out the window, to note which birds are hanging around. Observation is a key element for bird watching and it is your best tool. Stroll nature preserves and research sightings in local parks and nature ways. Bring a birding guide, or birding app, to identify what birds you spot.

 

What Feeder to Buy

Bird feeders are made in a variety of models in order to provide the best feeding delivery of the seed provided. Feeders come in tube, hopper, barn or ranch hopper, lantern-shaped hopper and many other fancifully shaped forms (including, cats, fish, birds and outhouses).  Feeders hang from a crook or limb, or mount to a pole or post. Other designs are engineered to attach to windows (great for apartment birders).

 

Knowing how and where you will be posting your stations narrows down the BEST ones suited for your bird species and needs. If you are planning to fill and check your feeder on a daily basis, buying a smaller model will be cheaper and it will give you the opportunity to monitor feeding selections and amounts.  If you expect a high population of bird visiting the feeder, particularly in harsh winter areas, a larger hopper will be your better choice.

 

optics den birding black oil sunflower seeds bird seedAlways pick a feeder that will offer the seed that birds in your area will want. Supplying black oil sunflower is a sure bet in every region.  Thistle, safflower, corn and red millet tend to attract the fewest birds.

 

Feeding style by species:

  • Cardinals, blue jays and grosbeaks are perching feeders; they will want a station that has a lip, large perch loops or bars, or a tray/shelf feeder.

 

  • Birds like juncos, titmice, doves and game birds enjoy dining from under the feeder. The smaller songbirds (plus cardinals, jays and redwing blackbirds) will also use a tray feeder. If you live in a dry climate, like the Southwest, roofs and drainage will not be an issue, but for most other areas roofs and drains keep wet off the tray and prevent stagnant clumps of moldy seed. Squirrels also love tray feeders  – so keep this in mind!

 

  • Consider purchasing two stations and at least two different styled feeders. This prevents squabbling and ensures a variety of seed choices are offered. The classic tube hopper style is great for most feeding areas – it will attract finches, chickadees, warblers, sparrows and nuthatches. These feeders are filled with seed mixes and the preferred sunflower seeds.

 

Always buy quality seed.  Clean, mold and insect–free seed holds the nutrition and maintains the health of your birds. Never purchase dusty, debris-filled, “buggy,” moldy or “cheap” mixes (red millet, corn).  Birds will waste undesired seeds leaving you with a mess and an unhealthy scattering of molding seed under the feeders.

 

  • Combination feeders blend several food holders into one attractive station, but as mentioned… they are expensive. They usually come with one or two suet cages that are affixed to the ranch-styled feeder. Some are hopper filled and others have the covered trough or shelf. These designs serve the needs of many species. One drawback of the suet cage combination is that…well, the cleaning gets complicated as the suet grease saturates the feeder and cleaning becomes a real chore whether you choose plastic or wood. The larger the model – the more awkward it is to fully clean.

 

Do your pre-purchase research before investing in your feeder. Like the squirrels at your feeding station you will certainly find yourself spoiled for choice!

 

Note: Never feed suspect, moldy or rodent infested feeds. Always clean and completely dismantle and scrub your feeder on a regular basis. The health of the birds depends on great quality feed and clean feeders.

 

Thistle and Suet Feeders

  • optics den birding thistle feederThistle feeders are designed to hold only one type of food. Thistle, or nyjer, feeders come in a mesh feeding sock to allow the finches and nuthatches to nibble upside down — their preferred feeding position. Some tube thistle feeders are constructed without perches to frustrate sparrows. The ports on thistle feeders are extremely small, so only the tiny nyjer seeds will work with any of these feeders.

 

  • Suet cages or log holders provide the suet enjoyed by woodpeckers, finches, bluebirds and nuthatches. Choose special trays to set out bluebird nuggets, peanuts and mealworms (bowls are sold that will hold live waxworms and mealworms).

 

  • Fruit and nectar species have their own cafes! Buy bolt-type feeders that hold oranges and apples for orioles. Nectar feeders are built to hold the liquid mixes that attract hummingbirds. Some of these also support orioles. There are a wide variety of functional and decorative “liquid” bird feeders with reservoirs composed of either plastic or glass. Choose those with ant moats or bee deflectors.

 

Nectar feeders require frequent and thorough cleaning – a chore that will be made easier with a properly designed feeder.

 

Nuisance Species Solutions and Squirrel Feeders

If squirrels, blue jays and starlings become an issue at your main feeding station there are solutions.  You can buy seed coated with hot pepper, squirrel domes and deflectors … or unique feeders. Brome’s “Squirrel Buster,” foils large birds and squirrels (http://bromebirdcare.com/about/) by deploying a weight tripped mechanism to keep squirrels and larger birds out.

 

optics den birding squirrel in jar feederOften the easiest way to deal with squirrels is to give-in and buy these wily guys their own diner. There are clever and delightful squirrel table feeders (shaped like benches or picnic tables) that use a bolt screw to hold ears of corn — these will also attract blue jays.

 

The style of bird feeder you choose is only limited by your personal taste! Whether you bird from a city balcony or hang feeders from the oak trees in the field, there will be hundreds of designs to choose from.  In that case, we need to get shopping…those feeders aren’t going to choose themselves!

 

What feeder do you use? Did you find a unique station, a decorative one or a whimsical feeder that truly delights? Leave your tips, thoughts and words of advice in the comment section!

The Modern Birder’s Best Field Guides

 

optics den birding binoculars 1

credit – johnrakestraw.net

Put down your trowel.

Bird watching has beat out gardening as the fastest growing hobby in the US and Canada. A recent study in Canada revealed that 1 in 5 people has become …. a birder! It’s hard to think of one activity that finds a child on grandma’s lap watching a chickadee at a feeder, and a booted hiker traversing a canyon to spot nesting golden eagles.

Everyone can be a bird enthusiast.

For the backyard ornithologist and the adventurous eco-traveler, there are two things a birder needs in their kit. The first is a good set of binoculars… and the second is a good quality field guide.  The most famous of these species portrait collections appeared in the 1830s. And the artist was? John James Audubon.

Audubon’s pivotal artistic avian masterpiece was set in motion during his childhood in France – when, like the rest of us, he became enchanted by the allure of birds. Audubon’s Birds of America is the product of a tenacious and dedicated ornithological genius. But are paintings more complicated to “read” than photographs?

Why photos may be the best choice

If you have ever purchased a painted field guide, you already know how difficult it can be to read those pictures.  Printing processes alter the colors of the original paintings – making the accuracy issue even worse. When you have similarly marked species (is it a female house sparrow or a white–throated sparrow… a Wilson’s Warbler or a Yellowthroat?), the clarity of photography ensures quick and easy identification.  Pack the photo guide and leave the paintings for your home décor! There are some hybrid photo/artwork selections that blend the best aspects of both illustration methods and these are listed in the last section.

What are field guides?

Field guides are the go-to source for bird watchers. They provide information on species, juvenile and sex associated plumage, body posture and movement habits, habitat, behavior, song, flight patterns and feeding styles. That is quite a bit, but all this information is necessary to help an observer deduce, usually through the process of elimination, what feathered beauty is in front of them.

 

Online versions for homework

optics den birding field guide binoculars

credit – audubon.org

Online bird identification guides are perfect for getting a thorough understanding of the species in your area. These websites have photos and video, song recordings and behavior pointers to help you develop a knowledge base. They also have great links for you to get more birding information. The song sections are worth studying as bird watching is mostly about bird listening!

Here are a few resources from top ornithological sites:

Audubon

The Cornell Lab of Ornithology

The American Birding Association

 

How to use your guide

Break down the identification steps by moving from generic to specific. Take note of the size and silhouette (outline) of the bird. The video below explains this process extremely well.

 

 

A wren has the size and plumage color of a sparrow but has a very different “perky” silhouette.  Field guides that categorize their book’s sections by family are the best choice for beginner birders and for quick researching in the field. You won’t find a Painted Bunting in Vermont or a Least Sandpiper in Kentucky.

If you plan to bird watch in a specific location, purchase a local guide. Peterson prints editions geared to regions.  Check out their birds of western and eastern North American selections. Visit or contact your local bird societies or wild bird supply stores. These resources will have a wide selection of guides to search through.  Find books that cater to individual families, species or habitats:

http://www.birderslibrary.com/features/shorebird-guide-comparison.htm

https://www.audubon.org/news/review-crossley-id-guide-raptors

http://blog.aba.org/2014/07/understanding-rarity-rare-birds-howell.html

 

Where to buy

Home and garden centers have bird supply sections. Often these stores carry a selection of bird watching books.  Contact bird watching clubs or larger organizations (Audubon has local chapters and shops), including your neighboring university, to decide which guide works best for your birding needs. You can also purchase guides online. The newer editions are often of higher picture quality and have been updated with new research as well. There is a bird book for every budget.

 

Mobile birding

Check out the new apps available for your cell – talk about mobile bird watching! Lighter than any text and available at the tip of your fingers – you have photos, depictions…and real vocalizations to compare. You can even play these calls while in the field to attract those species. This gives “tweeting” a fresh interpretation – you can have fun with a whole new kind of cross-species social media as you chat with these peeps!

Try these apps:

https://itunes.apple.com/us/app/chirp!-bird-song-usa-+/id364891918?mt=8

https://itunes.apple.com/us/app/birdseye-bird-finding-guide/id324168850?mt=8&ign-mpt=uo%3D6

https://itunes.apple.com/us/app/audubon-birds-pro/id333227386?mt=8

https://itunes.apple.com/us/app/national-geographic-birds/id315268465?mt=8

 

Recommended Field Guides for Bird Watchers

optics den birding binoculars 2

credit – birdwatchingdaily.com

The Sibley Guide to Birds (2nd edition): Yes, this one has paintings, but this guide contains many useful sections including, habitat maps including rare sighting areas and normal ranges, phonetic descriptions of calls, migration patterns, migratory species, taxonomic order and common name search terms. David Sibley’s masterful  illustrations have been digitally reproduced eliminating much of the earlier accuracy issues. This New York Times bestseller has been purchased by millions of birders – they can’t be wrong! Some readers have commented on the small print, but this book contains a vast amount of pertinent tips for the majority of serious bird watchers – and the price is in the budget range. Combine a rich publication such as Sibley’s with a photo illustrated guide.

The Stokes Field Guide to the Birds of North America: Stokes is an old standby. This field resource is illustrated with photographs – making quick and accurate live observation simple and easy. Birds don’t hang around or come into clear view for identification, so we are often left with fleeting glimpses.  Figuring out what popped into view is simpler with clean photographs and explanations of song, flight and behavior antics. New editions come with a CD recording of bird songs, 853 species represented and over 3,000 photographs.  Copies can be grabbed for under $25 – this guide is a bargain.

Kaufman Field Guide to Birds of North America: If you want a handy book to cart into nature with you – this is the one.  Designed and organized for use in the field – the birds are arranged by family rather than taxonomy – a big help when you need to identify a bird by size, shape and silhouette.  Range and migration maps face the page with the bird’s depiction- making range elimination or inclusion easy.  The addition of a tab feature allows instant navigation through the various possibilities, from wading birds to warblers. Renowned naturalist and conservationist, Ken Kaufman, has combined the clarity of photography with the markings enhancement of illustration in his groundbreaking guide. Purchase the new editions with current findings by the American Ornithology Union, updated species lists and range maps.

Try these as well – National Geographic Field Guide to the Birds of North America for handy use while in the field, and the Tory Peterson guides, oldies (the first edition was printed in 1934) and still goodies.

 

Well, those birds aren’t waiting! Drop us some more tips and suggestions for getting the most out of this fantastic past time.

What Hobby Began 40,000 Years ago? Birdwatching!

optics den birding cave paintingHumans have been bird watching for a long time. 40,000 year-old bird paintings beat out John James Audubon’s paint to canvas depictions by a slight stretch.  Our fascination with the avian species was key to helping date some of the oldest known artwork set onto the cave walls in Arnhem Land, Australia. The red ochre illustrations of the emu-like birds unfurl a thread that ties our two species together.

 

It isn’t just our fascination with a concept such as flight – the birds in those ancient paintings were flightless. It is the entire concept of “birdness,” which holds our desire to connect with these intelligent and resourceful creatures – they seem to hold the keys to a wisdom we can’t begin to search for.

 

Every culture watches birds. They are resurrection icons, deities, representatives of courage, strength and messengers to and from the spirit world.  These symbolic interpretations aren’t hard to miss. Watch a red-tailed hawk catching a current’s uplift – and the answer is there.

 

Writers in antiquity compounded the first true ornithological studies.  Birds appeared in the Indian Vedas, in Persian, Chinese and Japanese writings. The classical world delved into the feathered forum. Aristotle spoke of bird migrations and behavior in his Historia Animalium, and several passages concerning avian habits and appearance would be familiar to birdwatchers today! Aristotle should have availed himself of the e-book format —“the bird called chloris from being yellow beneath, is of the size of the lark, and lays four or five eggs; it makes its nest of symphytum…and lines it with straw, hair, and wool. The blackbird and jay do the same…the nest of the acanthyllis is also artfully constructed, for it is folded together like a ball of flax, and has a small entrance.”

 

You may need to bring your dictionary.

 

optics den birdingChristianity emerged in Europe and brought with it a compounded ideology of Levant teachings and resident pre-Christian beliefs. Birds feature prominently in Christian iconography, texts and practices. The Book of Genesis (Judaism) presents the story of the post-flood Noah releasing a raven and a dove from the ark in order to see if land had reappeared (the dove returns with the famous olive branch).

 

St. Francis of Assisi is regularly portrayed with a small bird. Assisi was especially connected to birds and he referred to all animals as his brothers and sisters. In 1220 he penned his “Sermon to the Birds.”

 

The modern age witnesses a dichotomy for feathered fauna. Intrigued by technology and driven to turn the wheels of science, 18th century society began to relegate birds into “specimens” and curiosities.  Driven by analysis and categorization, birdwatching was done at the end of a gun, rather than through the lens of field glasses (which were invented in the 17th century).  Stuffed specimens were packed aboard ships destined to eventually collect dust.  Interestingly, the 18th century hatches the first truly modern concepts of animal welfare, vegetarianism (practiced by Ben Franklin) and natural history movements.  These benevolence and “awareness” groups intertwined with other pressing causes such as abolitionism, human rights and poverty alleviation.  The modern interest in birdwatching as one geared to limit human environmental impact, to preserve avian species and to prevent habitat loss began in the mid-1700s.  Expansion into “unspoilt” ecosystems, and a rising understanding and quest to capture wisdom in nature through reason led by empathy, set the building blocks for our passions for birds and the natural world.

 

The founder of the Methodist church, John Wesley, claims that faith will “lead us beyond an exclusive concern for the well-being of other human beings to the broader concern for the well-being of the birds in our backyards, the fish in our rivers, and every living creature on the face of the earth.”  This voicing for nature as a thing to be cared for and honored is echoed in the words of the father of the naturalist school, John Ray. It is echoed in the writings of Voltaire, Benjamin Franklin, Thomas Jefferson and Thomas Paine.  Early ornithologists include Gilbert White and Thomas Bewick.

 

optics den birding 1The 1820s saw the introduction of avian art painted by the popular naturalist John James Audubon. Audubon wanted to depict the essence of the birds as they were in life AND set into their habitat instead of the tradition of fixing subjects in static poses. It was the Victorian era’s widespread access to print media, the invention of photography and the trickling down of “hobbies” to the emerging middle classes that heralded what we would recognize as bird watching.

 

In 1905 the Audubon Society (named in honor of J. J. Audubon) was formed as a true conservation organization. Founded by George Grinnell, the society quickly collected high-profile subscribers to spread the plight of birds whose populations were being decimated by humans – some species were hunted to extinction. However; the first birdwatcher’s (the term birdwatching wasn’t coined until 1901) field guide for species identification was printed in 1889 by Florence Bailey.

 

Optics Den Banner Optics Perception HD BinocularsThe rise in birding and naturalist clubs proliferated after the 1930s.  Scientific ornithological studies and the conservation based birding clubs saw a slow merging during the 20th century. Roger Peterson’s 1934 field guide made birding available to the general public. The popularity of binoculars enhanced the hobby after the 1940s, and now our century is enjoying this billion-dollar pastime!

 

Birdwatching is one of the few hobbies that blends biology, conservation, animal welfare and plain ol’ fun into one package. As a birder, you can choose how much and in what direction you want to take your hobby. You can hop a plane and join fellow ecotourists in the Amazon or hang a bird feeder in the maple tree outside your window.  You can start as a toddler and continue birding, as John James Audubon did, well into your wiser years.

 

What are you waiting for? 40,000 years of interest can’t be wrong. It’s time for you to join the birdwatching club. It’s fun, ever-changing, holds endless possibilities and benefits everyone including the economy, wildlife and nature.  After all, this hobby is for the birds!

What do the Numbers on Binoculars Mean???

Binoculars are categorized using a numbering system that can be a bit confusing for someone being introduced to binoculars for the first time. It is important to understand this numbering system though, because a small change in numbers can mean a massive difference in binocular experience. For instance, individuals looking for binoculars suited for hunting would not wish to purchase a pair designed for stargazing, and vice versa. Fortunately, figuring out the numbering system is not all that difficult, and a little knowledge can go a long way.

Magnification

The first number in the designation indicates the intensity of magnification, or how many times closer an object will appear through the binoculars as opposed to the naked eye. The magnification process of the binoculars is conducted through the ocular lenses, which are the lenses closest to the eyes when the binoculars are in use. The size of the lenses do not necessarily have any bearing on the intensity of the magnification, as difference lens qualities will sometimes allow smaller lenses to have a higher capacity for magnification.

Higher magnification isn’t always necessarily an advantage, however, because intensity of magnification is inversely proportional to field of view. Meaning, the higher the magnification gets the narrower the field of view becomes. Users might be able to see something incredibly close, but they will lose what is going on around the object. If surroundings are important, like with activities such as birdwatching or spectator sports, then a higher magnification may not be the right choice. Being able to see the pores on a soccer goalie’s face is impressive, but the experience will be rendered moot if the ball being kicked at those pores is not visible in the scene.

Increasing the magnification of a pair of binoculars will also make them less stable. If shakiness is an issue to consider, again, opting for the highest magnification available might not be the best choice. With extremely high magnification, even binoculars taking advantage of monopods or tripods become shaky. With that being said, it is also important to consider the user’s ability to hold the binoculars steady over prolonged periods of time if the binoculars will be handheld. Even the lightest pair of binoculars can become strenuous to hold given a long enough period of time.

Aperture

The second number is the designation refers to the aperture of a pair of binoculars. The aperture is controlled by the objective lenses, or the lenses furthest from the eyes when the binoculars are in use. Unlike the magnification number, the aperture number does in fact refer to the size of the objective lenses. The number represents the size of the diameter of the objectives lenses in millimeters. The larger this number becomes, the wider the lenses and the more light they gather when in use. Although written about camera lenses, this is a great article explaining aperture. The size of the objective lenses also affects the physical size of a pair of binoculars. The larger the size of the objective lenses, the larger the casing of the binoculars will have to become. Although different materials are used as casings, this also usually means that the weight of a pair of binoculars will increase with the aperture number. This is something to think about when the binoculars will be used in a handheld fashion especially.

A good pair of binoculars with a small objective lens diameter will most likely be best used for light trail duty or as a backup set that can be stored in a glove compartment. Binoculars with higher aperture characteristics can be used for more intense activities where the amount of light is very important to the end result. For instance, a set of binoculars with an extremely large diameter objective lens would be perfect for hobby astronomy. While binoculars probably won’t be able to achieve the same results as a telescope, they are a portable and flexible way of staying in tune with the stars without being too encumbered.

While the numbering system of binoculars can be a bit intimidating at first, breaking the set down into individual components can make determining the best combination for a specific task a lot easier. And, the best way to really understand the system is to get out there and try a pair on for size. Many retailers will be more than happy to allow the testing of a pair of binoculars in order for the customer to be happy and confident with their purchase.

Seeing Afar: How Do Binoculars Work?

Binoculars are a versatile tool that you can use for nearly any sporting endeavor you have. Bring your binoculars on vacation, to the practice field or to a sporting event when you want to get a better view, and you will have instant access to the views that would miss out on otherwise. This article explores the uses for binoculars that are most common, and you will learn why you should not leave home without your binoculars. A serious sports enthusiast will never miss a moment of a game, and the serious adventurer can see anything in the area with just one tool.

#1: What Do Binoculars Do?

Binoculars help you zoom in on an image that is several hundred feet away. You can adjust your binoculars to get a clear image of something that is far away, and you will be able to see the image as if you were standing right next to it. Large sporting venues may put your seats far away from the action, but you can survey all the action with your binoculars. You may zoom in on animals that walk near your cabin in the woods, or you can see animals from your hunting perch.

Binoculars can be used when you are trying to see sights on a vacation, and you will get a clearer picture of what is going on several hundred yards from your location. Tour groups only get so close to certain sightseeing landmarks, but you can see look over each landmark with your binoculars. Binoculars bring you closer to anything you want to see, and you will not be seen as you stand far away.

#2: How Do Binoculars Work?

Binoculars are an endless series of glasses that are used to focus images. You may wear glasses every day, and your glasses help to focus images using just one piece of glass. Binoculars use many pieces of glass to continually focus the images until you can see what you want. The glasses are housed inside a small cone, and you use the dial on top of the binoculars to adjust the glasses to change the resolution.

The resolution of the image you see can be changed using the dial, and you can fine-tune the image until you feel like you are there yourself. Binoculars come in different sizes, and there are different resolution possibilities. A cheap pair of binoculars will only allow you to see so far, but a nice pair of binoculars will allow you to see something that is well over a kilometer away.

#3: How Large Are The Binoculars?

You may purchase binoculars in many sizes, and you will get a small strap to carry the binoculars around your neck. Small binoculars can produce amazing resolution, but the smallest pairs will fold up to fit in your pocket. There are antique binoculars that fold into a wallet size, and there are large binoculars that come with their own case.

You must purchase large binoculars when you want to get the highest resolution possible, and you may purchase a small pair of binoculars when you do not need the greatest resolution. You can hang your binoculars around your neck when you are traveling, and you can pull the binoculars up to your face at any time. Think of the binoculars like a second set of glasses, and you can see anything that is far away easily.

#4: Do Binoculars Work With Eyeglasses?

Binoculars work perfectly well with eyeglasses, but you do not need your eyeglasses to see the images you get in binoculars. The lenses inside the binoculars are acting as your eyeglasses, and you will see a clear image regardless. You can push your glasses up on your head when using your binoculars, and you will be able to see anything you want. People who wear eyeglasses tend to be put off by binoculars, but you can get your glasses out of the way when you want to use your binoculars.

#5: Where Can You Use Them?

Binoculars are great for the hunter who is sitting in a perch all day. You have a good vantage point in the forest, but you cannot see everything perfectly. A pair of binoculars will allow you to see an animal that is far away, and you may track the animal while your partner takes the shot. You can track animals that climb trees, and you can identify people who are passing through your hunting area. Binoculars become a safety feature in this capacity.

Bring your binoculars to with you to a sporting event, and you can follow the action from your seat without watching the big screen. The big screen shows you replays of the game, but the binoculars you use will help you watch the game in real time. You can watch the coaches as they talk to their players, and you can see the players make substitutions on the sidelines. You get a much more personal experience from your binoculars, and you will enjoy watching people who are in the heat of battle on the field.

Your binoculars will help you have a wonderful time on vacation, and you will be able to see things that you are not allowed to get close to. Tour groups bring you only so close to some of the most beautiful attractions in the world, and you can zoom in for a closer look. Binoculars help you when you are birdwatching, and you can see the animals better when you are on a safari drive.

#6: Do Binoculars Fog Up?

Binoculars fog up like your eyeglasses, but you can clean the lenses while you are in the field. Your binoculars will not fog up inside the casing, but you must aware that your binoculars will not function well in humid weather. Keep your binoculars clean to prevent damage to the interior lenses, and ensure that you are using your binoculars in dry areas most of the time. You can avoid many problems by packing up your binoculars in the rain.

#7: Are Binoculars Worth The Investment?

Binoculars are a relatively small investment that you make to see items that you cannot see otherwise. There are many awesome brands selling high powered binoculars for a reasonable price that will last a long time. You will spend more on a cell phone or digital camera, but binoculars provide a view that your phone or camera cannot. Bring your binoculars along to help support your camera and phone. You can count on other pieces of technology to take pictures, but your binoculars will help create memories that you will never forget. You will not spend much, but your binoculars will last for a lifetime. The technology will never be outdated.

Binoculars are an innovative set of lenses that help you see items that are far away, and you may bring binoculars with you anywhere you go. Hang the binoculars around your neck, and you will be able to see anything you want. Push your eyeglasses out of the way, and you will get a clear image that can be seen from hundreds of yards away. Your binoculars put you in touch with things that are too far away to touch, and each pair is easy to carry around you neck or in your pocket.

If you want to learn more, here are a couple of great videos explaining different aspects of binoculars:

Carl Zeiss Victory 10X56 Rangefinder Binoculars Review

The Carl Zeiss Optical Inc Victory 10X56 Rangefinder Binoculars are like no other! I could not believe the clarity I was seeing with when I first tried them out after getting them. The brightness of the view through the lenses was like I was looking with my own two eyes, just magnified and crisper!

A Clear Shot

carl zeiss victory rangefinder binocularsThese binoculars are made with premium optics, and the images I saw were as clear as day, if not clearer! Due to the fluoride and special, multi-layer glass, it was not even hard to see my targets right before it was completely dark outside. There is a coating on the lenses, LotuTec®, that allows the images to be so vivid and superior. There is no way that I can blame missing a shot on not being able to see it clearly again.

Measured Up

One of the features that I was absolutely ecstatic over was the laser technology that is used in these binoculars. I have never used a pair of binoculars that had this type of technology before. The laser rangefinder (as I found out it is called), enables me to measure up distance so easily and quickly. The laser takes out all of the guess work that I was so unsure about before.

Again, this is another reason these binoculars are superior to any other I have ever used; the laser lets you see more efficiently when the lighting is something to be desired. Sometimes when I am out in the field or the woods, there are real small targets, like squirrels and rabbits for example, that can be so hard to shoot at. These binoculars help me to aim correctly.

When Things Get Unsteady

I have to make mention of the unwavering steadiness of this product. The laser is so accurate, that even in the most unsteady or shaky of conditions, I am able to keep a steady aim. I remember before these binoculars, it would be such a task to hold my stone age, no bells and whistles binoculars, and try to get a good shot. With the reliable laser system in these though, I am able to have a more accurate shot every time.

When I go to the mountains and go hunting, the rocks can sometimes prove to be a bit of a problem for me. When I think I have a good shot, I often find myself precariously placed on top of one rock or another. Of course these rocks are not stable, so I sometimes shift in position. That is a real good example of what I mean about how the laser stays steady, even through unsteady times.

Built Strong

I would be the first one to say that I just do not know how to “play nice” with my belongings. I am the first one to drop something, or to mistakenly smash it into the wall or some other surface. These binoculars have unfortunately taken a fall down to the ground more times than I would be willing to say. Every time they fall, I think to myself that I am going to have to be off to buy another pair. That is not the case though, they are resilient!

Another factor I am thoroughly pleased and quite impressed with, is the ease of cleaning the actual lenses. It must have something to do with that special coating I read about that is put on the lenses. They are a dream to simply wipe off dirt and water or smudges with just a soft cloth and some water.

I would enthusiastically recommend these binoculars!

Endeavor ED Binoculars from Vanguard: A Review

Endeavor ED from Vanguard is a premium choice binoculars for bird and nature watchers everywhere – and with good reason. There are four models of the Endeavor ED binoculars: the 8×42 or 10×42 (your more traditional choices) and the 8.5×45 or 10×45 (the larger options). All models are available in camouflage, which is very convenient. Vanguard has been manufacturing quality products for 25 years. They originally introduced a line of camera and photography accessories. But they eventually began offering sports optics like lenses and binoculars.

As far as the Endeavor goes for root prism binoculars, the physical design is pretty straightforward and similar to other comparable models. The eyecups are able to extend fully and hinge open. The weight charts in at just above average for binoculars of this class. Plus, the Endeavor Ed seems to be designed quite ergonomically. So when you hold it in your hands, it feels natural and sturdy.

The open bridge design of the Endeavor ED seems to be one of its more exciting features. This allows you to have two fingers between the hinges – sometimes three for extra stability while holding them. The Endeavor EDs are O-ring sealed and nitrogen-purged, so they are waterproof and internally fog-proof, which is a great feature if you’re bird or nature watching in a humid environment. One negative aspect of the design that stuck out to us was that the Endeavor’s interpupillary distance range is 58-74mm. This means that most people should have no issues finding a range that works with their eye width. However, if you have particularly close-set eyes, you may have some difficulties finding a range that’s comfortable. The exterior of the binoculars is a comfortable feeling faux leather material. Underneath the lens barrels there are cutaways (or divots), which give your thumb a naturally comfortable place to rest while the binoculars are in use. All in all, Vanguard’s Endeavor ED is a comfortable and sturdy set of binoculars that should be a good fit for the majority of people.

Vanguard Endeavor ED ReviewIn regards to the optical fields, depending on the size/model you’ve purchased, the Endeavor’s range will be average to fairly above average. Eye relief seems to also be above average but across all models. We also found the focus knobs to be rather sensitive but in a good way; the focus mechanism was still securely stiff and not too loose – as can be the case with other focus-sensitive binoculars. That way, the Endeavor is great for finding the ideal focus quickly and without inadvertently clicking past it.

Vanguard has designed the Endeavor with phase-coated BAK-4 prisms. An anti-reflection AR coating is also featured on every air-glass interior for efficiency in light transmission and image quality. In order to improve contrast, the Endeavor is also designed with a V-Max Silver coating for a sharper image; plus, the binoculars feature an emerald coating to make the green spectrum pop while viewing. The Endeavor’s glass itself seems designed to decrease chromatic aberration.

Speaking more to the binoculars’ adjustments, the Endeavor’s eyecups are able to adjust by using the helical twist mechanism. This takes the eyecups through two different positions: up and down. Even though these positions weren’t marked, the eyecups were still stable when adjusted. The right hand side of the binoculars features the diopter adjustment. It can adjust through 4 or more clicks in either direction of the midpoint. What we found truly interesting is that it’s featured in a product priced as reasonably as the Endeavor ED.

All in all, the features that one gets when they purchase the Endeavor ED from Vanguard make it a great value for the cost. If you want a second opinion on these great binoculars, check out the video below, or see our full post on the best binoculars on the market:

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