An upgraded replacement for the Nikon DK-29 Eyecup to provide extended eye relief and viewing comfort. The ProMaster 3793 eyecup has a soft cushion surrounding it for comfortable viewing, especially for eyeglass wearers. It helps to shield light, making it easier to see the viewfinder. It protrudes further from the back of the camera than the standard eyecup, blocking out extraneous light and helping to keep the viewer's eye, face, and nose further from the back of the camera for greater comfort. Please see the specifications for a list of compatible cameras. Replacement eyecup for Nikon DK-29. Fits Nikon: Z5 Z6 & Z6II Z7 & Z7II