The Sony 50mm f/2.8 Macro lens is a compact macro-focus lens that covers the full range from life-size to infinity. "Life size" macro imaging means that the image you capture is the same size as the subject in reality, giving you spectacularly sharp photos of insects, flowers, gemstones, postage stamps and other small nature subjects and collectibles. Mounted on the Sony Alpha 100 camera, the Sony 50mm Macro lens provides a 75mm focal length (35mm equivalent), which means it can also be used as a standard and midrange telephoto lens. Get incredibly close to small subjects with the Sony SAL-50M28 macro lens. It allows you to capture the most subtle details with spectacular clarity.