Influence of the optical coating on the quality of binoculars and riflescopes The coating of the lenses has a major influence on the optical quality and, of course, on the price of an optic (binoculars or riflescope). This is where the big differences between good and cheap binoculars are particularly noticeable - especially in terms of brightness and contrast. Uncoated glass reflects (mirrors) approx. 4% of the light per glass-air transition. A lens [...]
