VILTROX 1.08x-1.60x Zoom Viewfinder Eyepiece Magnifier for Canon Nikon Pentax Fujifim Samsung Sigma Sony Olympus Minoltaz Dslr Camera (Black) Magnification Ratio:1.08-1.6,it can greatly improve the your camera eyesight You need not worry about the brightness of the viewfinder's image being affected after installation, as this magnifier does not affect the brightness of the viewfinder's image at all. This magnifier does not create vignetting affect. makes your viewfinder's image larger The parcel includes 1x 1.08-1.06x zoom eyepiece viewfinder, 2x silicone eyecup, 6x camera mount adapter We offer one month warranty.