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Field of view is the area seen through binoculars. Typically field of view is measured in feet per 1,000 yards. It can also be measured in degrees. The greater the field of view the more area you see when peering through your binoculars. A large field of view makes seeing moving objects such as birds and other animals easier. A large field of view also makes scanning for objects a little faster. As a rule of thumb, field of view is widest with lower magnification binoculars such as a pair of 8x 32mm binoculars and narrowest with higher magnification binoculars such as 10x 40mm binoculars.

Field of view is the area seen through binoculars. Typically field of view is measured in feet per 1,000 yards. It can also be measured in degrees. The greater the field of view the more area you see when peering through your binoculars. A large field of view makes seeing moving objects such as birds and other animals easier. A large field of view also makes scanning for objects a little faster. As a rule of thumb, field of view is widest with lower magnification binoculars such as a pair of 8x 32mm binoculars and narrowest with higher magnification binoculars such as 10x 40mm binoculars.

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When picking a pair of binoculars we advise customers to set a price range. Prices will vary from $250 all the way up to a couple thousand dollars. If you need help picking a pair of binoculars that meets your needs and budget please don't hesitate to call and ask for one of our product specialists. We do this all day.... day in and day out so we can quickly help you pinpoint your needs while working within your budget. We currently have two lists that we have prepared for our customers, " The Top Ten Best Selling Binoculars and "The Top Selling Binoculars Under $500 ." These lists should give you a feel for some of the most popular binoculars chosen by our customers.

Magnification, or power, is the ability to make an image appear "X" times closer than it really is. That is, an 8x binocular will "bring in" the image 8 times closer than the naked eye and a 10x, 10 times as close and therefore bigger. How much magnification is enough? Well that depends on your needs and the intended subjects to be viewed. If your primary use is in the deep woods and viewing distances are not great, the lower power will give a greater depth of field and generally a wider field of view without requiring a "large" objective lens as well (see next section). But if you need to scan across the prairie's of the mid-west or the canyons of the Rockies, or get as close as possible to that Rufus Hummingbird that has been zipping through your back yard; the greater magnification will "reach" further bringing the subject "closer." Too often we see customers purchase more magnification than they need. For example a customer will be using a pair of glasses for in a heavily wooded area but can't figure why his/her 10x 40s don't seem to deliver as much as light as their buddies 8x 40s. As reminder always remember that magnification and exit pupil work hand in hand.

As a general rule, larger diameter binoculars have three main advantages over the smaller models: brightness, sharpness and steadiness. The larger the lens diameter allows more light to enter the binocular, also know as "light gathering ability." As mentioned earlier the objective lens size is one factor in determining the size of the exit pupil, and when the exit pupil is smaller than our eyes pupil the image gets washed out or dim (brightness and sharpness). Also, a smaller diameter affects how much detail we can see. It doesn't really matter if an object is magnified 8 times if you can't see it clearly. In general, resolution (sharpness) is best at the center of an objective lens and decreases at the outer edges because of curvature. So, the bigger lenses have a larger central area (sweet spot) of resolution than smaller lenses.

As with everything in life there are trade-offs. Larger lenses generally mean larger (more bulky) and heavier binoculars. Additional weight, up to a point, can aid in the user be able to hold the binoculars steady, but if you are carrying everything you need for a long hike (and it is all on your back) every ounce can be critical. Beyond a certain point, larger binoculars become too heavy and bulky to carry easily and binoculars above 12x-50 mm are best used in conjunction with a tripod.

Objective lens diameter can be a critical consideration in choosing a set of binoculars, but magnification, size/weight and viewing light conditions will all factor into the equation. If your needs are light transmission (brightness) go with a lower magnification and a larger objective lens. If you need to see further, it's more magnification and the biggest objective lens your situation will allow, keeping in mind size/weight, etc.

As in everything else, it is important to remember that there are always trade offs in deciding between 30mm's vs. 40mm's vs. 50mm's binoculars.

Applying what you know about exit pupil and overall viewing quality; we prefer mid to full size binoculars for most applications. The reason being that mid to full size binoculars will normally offer an exit pupil that is larger than a typical pair of compact binoculars. Most compact binoculars will offer exit pupils of 2.5mm to 3mm. If your hunting or birding scenarios do not concern themselves with light transmission, then by all means consider a pair of compacts. However, if your typical situations include viewing in low light then please consider a larger set of binoculars that will provide you with an exit pupil of at least 4mm. The primary advantage to compact binoculars are size and weight (some fit in a pocket) but they can be more difficult to focus/adjust than other models. An example of a pair of mid sized binoculars would be one's with a 30-35mm objective lens such as a pair 8x 32mm's while a typical pair of full sized binoculars would have an objective lens of 36mm or larger.


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Just started into bird watching using Cabelas' Alaskan Guide 10 x 28, which are very nice binoculars, even when I compared them to higher end ones. Still, when I read about the Pentax also being able to focus very close too, I figured it could add a whole new dimension to seeing flowers, plants, bugs, etc, and still be able to use for bird watching, so I ordered them.

Today I took them out to the woods along with my Cabelas. The Cabelas give a crisper picture at "far" range but I must say the Pentax does good enough for me.

Now, looking up close, the Pentax is truly amazing. I couldn't stop looking at the grains of wood, plants, bugs, etc. I put my face right up to some berries that were blue on cedar trees with my naked eye, then backed up a bit to see the same ones with the Pentax, and the extra detail that is seen is amazing with such a 3-D affect to boot. Then the bug watching was a thrill too. Since it was easy to hold steady enough for a clear sight on closeups and at distance, I'm very happy with the 8 power over the 6 power.

Spend enough time in the water, and chances are your equipment will spend some time in it. That's why Bushnell had the foresight to build the H2O series of binoculars, which are O-ring-sealed and nitrogen-purged to completely lock out moisture should you spill water on the housing, take your binoculars overboard, or simply run into foul weather along the way. The H2O binoculars feature rubber armoring with textured pads to give you a sturdy grip in slippery situations. More significantly, the binoculars' multicoated optics and premium-quality BaK-4 prism glass maximize light transmission and image clarity, so you can enjoy a clear view of the Orcas in the distance or the fast-approaching coastline. You'll quickly see how a little planning on Bushnell's part goes a long way in magnifying your adventures on or around the water. Other features include twist-up eyecups, a large center focus knob, and long eye relief.


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