If you're looking for a more comfortable way to view through your camera's viewfinder, the Nikon DK-19 Rubber Eyecup is a great option. This eyecup allows less stray light to enter the viewfinder, providing a clearer image with which to compose your shot. It's also great for eyeglass wearers, as it provides a more comfortable viewing experience. The DK-19 installs easily to select cameras' eyepieces, so you can start enjoying its benefits right away.