Seagull 1x-2x Scew-In Right Angle Viewfinder for Nikon D800 D700 D4 D3 D3S D3X D2H D2Hs D2Xs D1 D1H D1X DSLR SLR Cameras with 22mm eyepiece thread Keeps correct subject position even with 360 degrees rotation Diopter adjustment to accommodate for individual eyesight. Rubber eyecup for comfortable viewing Supports Nikon SLR Cameras with 22mm round high eye-point viewing piece 1-2X optical magnification, can observe the details well. Well sealed hood blocks out the light while magnifying the frame for accurate color and focusing.