1.51X view magnification, easier to find excellent views and obtain accurate focus. Good helper for short-sighted / long sighted people (within 500 degree), enable you to see view clearly without glasses. High quality anti-fog optical glass, do not create vignetting or affect brightness after installation. 15mm height away from the camera after installation, ease your organs and keep them away from the screen. 6 magnifier mounting bases, compatible with DSLR camera. material: ABS color: black This 1.51X viewfinder magnifier is specially designed for DSLR photographer. convenient and clear for photographer who are with glasses to spot scenes. Magnification: 1.51X Item Size: 3.5 x 3.2 x 2.2cm Compatibility: 6 different mounting bases fit for DSLR camera, such as "N" mounting base: For (Full-frame & -C) DSLR Camera and etc; "C-EF" mounting base: For -C DSLR Camera and etc; "C-1D/5D3/7D" mounting base: For Full-frame DSLR Camera and etc; "P" mounting base: For DSLR Camera and etc; "F" mounting base: For , , , Leika R, Camera and etc; "S/K" mounting base: For , Camera and etc. Package Contents: 2 x 1.5X Zoom Viewfinder Eyepiece 4 x Eyepatch 12 x Viewfinder Mount Base Note: Camera is not included. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.