What is a center focus binocular?
A.25 A center focus (CF) binocular uses a centrally mounted wheel or lever that adjusts both eyepieces simultaneously. CF binoculars are the most versatile and commonly used focusing system in a binocular. Most CF binoculars come with a focusing device on one of the eye tubes (diopter adjustment) that will compensate for differences in the strength of each eye.
