Nikon Diopter +0.5 Correction Eyepiece for Nikon Digital SLR Cameras Optimizes your SLR viewfinder's sharpness to your eyesight Provides a +0.5 diopter value Compensates for farsightedness Compatible with Nikon D100, D70, N80, N75, N70, N65, N60, N55, N50, Pronea, N2-4-5-6000 Series and FM/FE10 cameras To determine which diopter is best for you, consult your optometrist, ophthalmologist or dispensing optician