The lens nearest whatever is under scrutiny provides an image, which can then be enlarged by the lens nearest the viewers eye by moving it closer or further away from the objective lens. Here, since they are, in effect, half the size of a regular pair of field glasses, better quality optics can be afforded, as the cost will be proportionally lower.
The bashability of binoculars refers to how tough they are. The most advanced binocular lens cloths are made of microfibre. Law enforcement agencies prefer to use second-generation binoculars.
They suck dirt off the lens surfaces leaving them crystal clear. There are fine and intricate layers of chemical coatings on the surfaces of binoculars lens. Phase correction is a coating on the lenses that increases the sharpness, contrast and color saturation.
You may not be planning on getting them wet, but things happen; you might trip and drop them in a mud puddle, take them out on a foggy day, or you might get caught in a freak rain shower. Waterproof binoculars are preferred for all marine, hunting, birding and other nature related activities.
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