Opteka Voyeur Right Angle Spy Lens for Nikon D4S, DF, D4, D3X, D810, D800, D750, D610, D600, D7200, D7100, D7000, D5500, D5300, D5200, D5100, D3300, D3200 and D3100 Digital SLR Cameras Point your camera one way and shoot the other with this right angle lens attachment Easily attaches to your lenses filter threads (67mm or 58mm or 52mm) This lens can be a valuable asset when shooting video (or still pictures) at the beach, pool, and other public places Accommodates all viewing distances from near wide-angle to full zoom Built-in rotating barrel to allow height adjustments. Compact, 3 1/2 inches long