The EPN-DK17 Eyepiece for Select Nikon Cameras from Vello is a replacement eyepiece for select Nikon SLR and DSLR cameras. The eyepiece provides a comfortable frame with which to utilize the camera's viewfinder and blocks unwanted light from entering the viewfinder. Made from soft and durable rubber, it also prevents scratching and damage to eyeglasses. It mounts easily and securely to the viewfinder and is compatible with select Nikon cameras.