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What is the diopter adjustment on a binocular?

April 26, 2017adjustment binocular diopter

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What is the diopter adjustment on a binocular?

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A28. The diopter adjustment on a binocular allows you to compensate for differences in strength between your right and left eye. Since most people have one eye stronger than the other, this is a feature found on all binoculars except for “focus free” models.