Sigma 150-500mm f/5-6.3 DG APO OS HSM
Sigma 150-500mm f/5-6.3 DG APO OS HSM AutoFocus Telephoto Zoom Lens for !Ni !Ca !So !Pe !Si Cameras
Rating: Ed: -, User: - (normalized, 0=useless, 50=average, 100=excellent).
Mounts: Canon EF, Nikon F, Pentax K, Sigma SD, Sony A.
Optical zoom: 3.3x.
Focus: AF (built-in, ring-type).
Approximate street price: USD 999 (new, w/o tax).
Introduced: no data.
Sigma is a family owned manufacturer of photographic equipment founded in 1961 in Japan. The company's main business is to manufacture third party lenses. However they also produce third party flash units and, since 2002, their own line of DSLR and compact cameras. Sigma's digital cameras use a special sensor, developed by Foveon, that records full color information for every pixel. In late 2008 Sigma acquired Foveon.