Lenses are designed for exclusive use on digital cameras with smaller-size imagers and inherit all of the benefits of our Di products. These lenses are not designed for conventional cameras and digital cameras with image sensors larger than 24mm x 16mm. The SP AF17-50mm F/2.8 is a lightweight, compact, fast standard zoom lens designed exclusively for digital SLR cameras, expanding the product concept of the popular SP AF28-75mm F/2.8 zoom lens. In addition, portrait shots are made beautiful with the natural out-of-focus effect characteristic provided by the fast F/2.8 aperture. Additionally, a broader photographic expression through the use of faster shutter speeds as a result of the maximum aperture offers enhanced photographic pleasure. The lens boasts one of the best close-up shooting performances in the class of fast standard zoom lenses designed exclusively for digital cameras and featuring an F/2.8 maximum aperture throughout the entire zoom range, to ensure stress-free photographic shots at all focal lengths and distances Specifications: Model A16 Lens Construction (Groups/Elements) 13/16 Angle of View 78¿45'-3111' (APS-C size equivalent) Type of Zooming Rotation Diaphragm Blade Number 7 (Circular apertures) Minimum Aperture F/32 Minimum Focus Distance 10.6in.(0.27m) Macro Magnification Ratio 1:4.5 (at f=50mm MFD 0.27m) Filter Diameter 67 Weight 430g (15.2oz) Diameter x Length 2.9 x 3.2in.(74.0 x 81.7mm) Accessory Flower-shaped Lens hood Mount Canon - Available BIM Nikon with Built-In Motor - AvailableSony - AvailablePentax - Available
