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Large aperture standard zoom lens designed specially for digital SLR cameras. The lens is ideally suited for a wide variety of subjects and is designed specifically for digital SLR cameras featuring APS-C size image sensors. Specifications
Lens Construction 15 Elements in 12 Groups
Angle of View (SD Format) 72.4° - 20.2°
Number of Diaphragm Blades 7 Blades
Minimum Aperture F22
Minimum Focusing Distance 20cm
Maximum Magnification 1:2.3
Filter Size 72mm
Dimensions Diameter 79mm X Length 82.5mm
Weight 455g This revolutionary lens has a minimum focusing distance of 20cm (7.9") throughout the entire zoom range. A maximum magnification of 1:2.3 enables extreme close-up photography. An impressive achievement for a standard zoom lens. The new lens design and multi-layer lens coating reduce flare and ghosting, a common problem with digital cameras.
The advanced design has resulted in a compact and lightweight lens
A Special Low Dispersion (SLD) lens and two aspherical lens elements provide excellent correction for all types of aberrations and produce a high level of optical performance throughout the entire zoom range. This lens offers a large F2.8 aperture at 17mm wide angle and yet it is compact, with an overall length of just 82.5mm (3.2") and diameter of 79mm (3.1"). Performance is superb, even in relatively low light conditions indoors or at dusk.
Inner Focus System
The lens is equipped with an inner focusing system, which prevents the front element from rotating making it particularly suitable for petal shaped hoods and circular polarizing filters.
Zoom Lock
The lens is also equipped with a zoom lock that eliminates "zoom creep" during transit.  |
