JJC Eyepiece Eyecup for Nikon D5 D4S D4 D3X D3 Df D850 D810A D800 D500 as DK-19
Less stray light enters the viewfinder and a less flared, clearer image with which to compose your shot is provided. The eyecup is made of soft silicone. The ergonomic design will fit your eyes better.