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  1. tenex

    Are aspherical lenses and other tech present in mid to high end binoculars?

    Welcome to Birdforum. Try searching for "aspheric" etc. One example: https://www.birdforum.net/threads/where-are-the-aspherics.386205/ You're right, manufacturers don't typically reveal details of optical design for binoculars, as many do for camera lenses, even giving cross-sections showing...
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