Binoculars come in a variety of shapes, sizes, and specifications. Binoculars repair is the last thing on the mind of a user as they purchase their prized tool.
There are different generations of night-vision binoculars. Many people prefer to carry binoculars around freely, rather than in a case. If you are a backpacker or will be doing your birding on a bicycle, then you may wish to consider mid size or even compact binoculars.
Size matters when one considers the mode of birding. While the Leupold 10x50mm tactical binoculars are great for tactical operations, it is no loser to hunting and shooting sports and bird watching and observations. Distance measuring is important, but binoculars with a wide field of view allow you to see a larger picture, and keep an eye on several objects at once.
If you are still in your twenties you can probably use all of that 7mm exit pupil above as your pupils will dilate to about that size in very dark conditions, however as you get older your pupil does not dilate more than about 4 to 5 mm so large exit pupils are wasted. Night vision binoculars are a must for anyone in a profession that requires secret night work.
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