Features
Ultra-wide zoom lens
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.
The best possible correction of aberrations
Three
SLD (Special Low Dispersion) glass elements are employed for effective
compensation of color aberration, which is a common problem with
super-wide angle lenses. One piece of glass mold 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 9.4" (24cm) at all focal lengths
This lens has a minimum focusing distance of 9.4" (24cm) throughout the entire zoom range.
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