Selens Eyepiece Eye Cup for Nikon DK-19 F4 F5 F6 D1 D1X D1H D2H D2Hs D3 D3X D4 D4S D700 D810 D800 D800E D810 D3S DF The Eyecup provides cushioning around the camera's eyepiece,and is especially useful to eyeglass wearers Cushions your face while looking through the viewfinder Made of rubber and plastic.Rubber touch point for soft eye contact. You can even view it with your glasses on. Attaches to the viewfinder eyepiece minimizing extraneous light and vision fatigue For a more comfortable fit, replace the original one with this rubber eyecup