The Nikon DK-19 Rubber Eyecup allows for more comfortable viewing through the camera’s viewfinder, especially for eyeglass wearers. Less stray light enters the viewfinder and a less flared, clearer image with which to compose your shot is provided. The DK-19 installs easily and is compatible with the Nikon D2 and D3 DSLR series, the D4, D700 and D800 DSLR’s and the F6 SLR camera.