The 1.51X viewfinder magnification makes it easier to find excellent views and focusing accuracy. A great aid for nearsighted/visually impaired individuals (less than 500 degrees), allowing you to see clearly without glasses. High-quality anti-fog optical glass doesn't create vignetting and doesn't affect brightness after installation. 15mm height after camera installation softens bodies and keeps them away from the screen. Includes 6 magnifier bases, compatible with various DSLR cameras. Material: ABS Color: Black This 1.51X viewfinder magnifier is specially designed for DSLR photographers. Makes it easy for photographers who wear glasses to see scenes. Magnification: 1.51X Item size: 3.5 * 3.2 * 2.2 cm Compatibility: 6 different bases suitable for various DSLR cameras, such as "N" base: for cameras digital SLR cameras (full frame and -C), etc.; Base of 'C-EF': for cameras - C DSLR camera and base;; Base of 'C-1D / 5D3 / 7D': For full-frame DSLR camera and etc; 'P' base: For DSLR camera etc. 'F' base: For , , , Leika R camera, camera, etc.; Base of 'S / K': For, camera, etc. List: 1 * 1.5X viewfinder zoom eyepiece 2 * Visor 6 * Viewfinder base Note: Camera not included. Only the above package content, other products are not included. Note: Light photography and different displays may cause the color of the item in the picture to be a little different from the real thing. The allowable measurement error is +/- 1-3 cm.