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 DSLR-A100 camera, this lens provides a 75mm focal length (35mm equivalent) - which means it can also be used as a standard and midrange telephoto lens.
 
Sony SAL50M28 Macro lens-50mm-F/2.8-Minolta A-type Features

    Manufacturer          Sony Corporation
    Manufacturer Part Number          SAL-50M28
    Manufacturer Website Address          www.sony.com
    Product Model          SAL-50M28
    Fixed Focal Length          50mm
    Weight          10.41 oz
    Product Name          SAL-50M28 50mm f/2.8 Macro Lens
    Magnification          1x
    Product Type          Macro Lens
    Aperture Range          f/2.8