Tom Ford Gisella SunglassesConstruction:13 Groups/ 16 Elements Diaphragm: 7 blades Angle of view:78° 45' - 31° 11' (APS-C size equivalent) F stop range:2.8- 32 Closest Focusing Distance:10.6in. (0.27m) Maximum Magnification:1:4.5 Maximum Aperature: f/2.8-4 Filter Size:67mm Dimensions (Length x Diameter):L: 81.7 x D 74.0 mm / 3.2'' x 2.9'' Weight:14oz. (398g) appx.
Di II: 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 35mm film 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.
The Tamron 17-50mm is popular because customers like the following qualities of the Tamron 17-50mm: Consistent output Fast / accurate auto-focus and Strong construction. ソニー/タムロン/Tamron SP AF 17mm-50mm f/2.8 XR DI-II LD IF Zoom Lens f/Sony & Minolta AF016M700