Canon -2.0 Dioptric Adjustment Eyepiece Lens E For EOS 5D MARKⅡ 60D 70D 80D 90D

Eyepiece diopters are designed for specific camera models and are identified by a plus, a minus or a neutral numeric diopter value. . This is why you won't find an accessory Nikon eyepiece diopter valued at minus one. Minus one is considered the optimum starting point for the majority ofSLR users with normal vision. . The combination of the camera's viewfinder components and a clear (standard) eyepiece form a virtual image of a subject on the camera's focusing screen that is the approximate equivalent of a viewing distance of one meter. . The eyepiece's diopter value is, when combined with the viewfinder's minus one value, the end-result value. No combination of the camera's base value of minus one and a given accessory diopter's value is required to arriv Optimizes your SLR viewfinder's sharpness to your eyesight Provides a +2.0 diopter value Compensates for farsightedness For Nikon D50, D70, D100, N50, N60, N65, N70, N80, N6006, Pronea, FM10 cameras