Vello EPE-DK23 Eyepiece Extender for Select Nikon Cameras Ideal for Eyeglass Users | Reduces Viewfinder Magnification by 30% Extends Eyepiece by 5/8" (15 mm) | Protects Camera's Eyepiece Prevents Smudging of Camera's LCD | Mounts Easily and Securely Fits Select Nikon Cameras One Year Limited Warranty