This ultra-wide zoom lens has a wide angle of view from 102.4 - 63.8 degrees
(when Sigma mount is used) and it is exclusive to digital SLR cameras. SLD glass
elements effectively compensate color aberration. Aspherical lenses provide
maximum correction for distortion and various aberrations; high image quality is
displayed throughout the entire zoom range. The HSM equipped models makes fast
AF speeds and quiet shooting a reality, and it is also capable of full-time
manual focus. It has a minimum focusing distance of 9.4" (24cm) at all focal
lengths. It is also equipped with an integral Petal-type hood to block out
extraneous light.
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.
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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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