TARION TR-V1 Professional Optical Viewfinder 2.5x universal quick release plate + + external adjustment knob with 3 "display and 3.2" for Canon 5d mark iii 70d Nikon Pentax (Electronics)
Mounted on a Nikon d7000 and D7100. Fulfills its function very well! Fully adjustable: vertical, horizontal and depth (btr comes with a key to the central setting). Fixed under the case, a 1/4 kodak below to attach it to a tripod or monopod and go. W