The diopter is the mechanism that allows you to adjust the focus for each eye individually, improving your viewing experience. You can adjust the diopter on a binocular by using the small wheel or lever that's usually located on the right side of the binoculars.
Article: Optics Buying Guide
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We understand the importance of choosing a binocular or spotting scope that works for you and are pleased to provide this detailed and easy to use Optics Guide.
Video: Binocular Basics, Why Go Premium, and Choosing the Binocular that Will Suit Your Needs
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Video: Tripods, Heads, and Accessories for Spotting Scopes
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