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This Sigma DC Series lens is made exclusively for APS-C format sensor equipped cameras.
The Award Winning 10-20mm f/4-5.6 lens is an Ultra Wide perspective zoom lens ideal for special effects and also suitable for indoor photography with its full frame format.
Multi Layer lens coatings employed here have been specially designed for DSLRs to prevent both unwanted flare and ghosting effects. As a result of this there is also an optimum colour balance attained throughout the zoom range.
As regards the optical arrangement there arethree SLD (Special Low Dispersion) plus one glass mould and two aspherical lens elements for effective correction of colour and spherical aberration as well as keeping distortions to a low level.
The focusing system uses a Hyper Sonic Motor for fast and quiet focusing. It is an Inner Focus system which allows the use of a bespoke petal type hood as the front of the lens does not rotate during use.
|Lens Construction||14 Elements in 10 Groups|
|Angle of View (for SD1)||102.4 - 63.8 degrees|
|Number of Diaphragm Blades||6 Blades|
|Minimum Focusing Distance||24cm / 9.4in.|
|Filter Size||Diameter 77mm|
|Dimensions||Diameter 83.5mm x Length 81mm / 3.3in. x 3.2in.|
|Weight||465g / 16.4oz.|
Ultra Wide Zoom Lens
The Sigma 10-20mm F4-5.6 EX DC HSM lens allows enjoyment of super wide-angle photography and it is a very powerful tool for indoor shooting and landscape photography with APS-C size image sensors of digital SLR cameras. Wide angle of view 102.4-63.8 degrees (for Sigma mount) offers the photographer greater freedom of expression.
Most Appropriate Coating for Digital SLR Cameras
The new multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras and also creates an optimum color balance through the entire zoom range.
Best Possible Correction of Aberrations
Three SLD (Special Low Dispersion) glass elements are employed for effective compensation of colour aberration, which is a common problem with super-wide angle lenses. One piece of glass mould and two hybrid aspherical lenses, offer excellent correction for distortion, as well as all types of aberration.
Inner Focus System
This lens incorporates an internal focusing system, which eliminates front lens rotation allowing the use of a Petal-type Hood and also minimize fluctuation of aberration caused by focusing system
HSM (Hyper Sonic Motor)
The HSM equipped models ensure a silent, high-speed AF function as well as full-time manual focusing capability for Sigma, Canon, and Nikon-D mount lenses. Minimum focusing distance of 24cm (9.4") at all focal lengths This lens has a minimum focusing distance of 24cm (9.4") throughout the entire zoom range.
Sigma 10-20mm F4-5.6 EX DC HSM is awarded TIPA best consumer lens in Europe 2006
The Sigma 10-20mm F4-5.6 EX DC HSM super wide-angle zoom lens,won the "TIPA (Technical Image Press Association) best consumer lens in Europe, 2006" prize. Currently, 31 publications from 12 countries are members of TIPA (Technical Image Press Association) organization and chief editors and technical editors of these publications constitute this organization. Since 1991, TIPA has presented many awards in several sectors, including imaging. TIPA has stated that with a versatile range of wide-angle focal lengths, a good optical performance and a budget price, the Sigma 10-20mm is an excellent investment for owners of DSLRs with APS-C format sensors. Its sharpness remains constant throughout the zoom range, and its compact size makes it an ideal companion for shooting travel, landscapes or architectural photography.