This 1.51X viewfinder magnifier is designed for DSLR photographers. It provides added convenience and clarity for those who wear glasses when viewing scenes. Features 1.51X magnification, making it easier to frame shots and achieve accurate focus. Suitable for individuals with mild vision correction needs up to 500 degrees, allowing clearer viewing through the viewfinder without glasses. Constructed with high-quality anti-fog optical glass that does not cause vignetting or reduce brightness. Installs to sit 15mm from the camera, reducing strain and keeping the face away from the screen. Includes six interchangeable mounting bases compatible with various DSLR camera models. Specifications: Magnification: 1.51X Item Size: 3.5 x 3.2 x 2.2cm / 1.4 x 1.3 x 0.9in Item Weight: 20g / 0.7oz (with covers) Package Size: 10.3 x 10.1 x 3.6cm / 4.1 x 4.0 x 1.4in Package Weight: 83g / 2.9oz Compatibility: - "N" base: Fits Nikon full-frame and APS-C DSLR cameras - "C-EF" base: Fits Canon APS-C DSLR cameras - "C-1D/5D3/7D" base: Fits Canon full-frame DSLR cameras - "P" base: Fits Pentax DSLR cameras - "F" base: Fits select Fujifilm, Kodak, Sigma, Leica R, and Olympus cameras - "S/K" base: Fits Minolta cameras Package List: 1 x 1.5X Zoom Viewfinder Eyepiece with Covers 2 x Eyepatch 6 x Viewfinder Mount Base Note: Camera is not included.