The Nikon DR-5 is very convenient for waist-level or low-angle photography since it provides an upright, unreversed image for right-angle viewing.Individual eyesight adjustment is possible with the built-in diopter. The reproduction ratio can be set to 1:1 or 1:2. It's fitted to be mounted on SLR cameras that have a 22mm round high eye-point viewing eyepiece thread.Works With: Nikon DfD810D4SD800ED800D4D3SD3D700D3XD2HD2XsD2Hs