Seagull 2.3X Magnification Viewfinder for Canon, Nikon, Leica, Pentax, Minolta, Olympus SLR Cameras Seagull 2.3X Magnification Viewfinder Ideal for macro photography Eyepiece adapters for Canon, Nikon, Leica, Pentax, Minolta, Olympus cameras Includes rubber eyecup for comfortable viewing and mini protective pouch ISO standard: 9001:2000