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The super wide-angle capability
of the 10-20mm zoom makes it a very powerful tool for both indoor and
landscape photography. It is specifically designed to optimise results
with digital SLR cameras encorporating APS-C size image sensors or smaller.
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 24cm (9.4”) at all focal lengths. It
is also equipped with an integral Petal-type hood to block out extraneous
light.
10-20mm
F4-5.6 EX DC HSM lens allows enjoyment of super wide-angle photography
making it a very powerful tool for indoor and landscape photography with
APS-C size image sensors of digital SLR cameras. Offering an ultra-wide
angle of view 102.4 - 63.8 degrees ( when used with a Sigma SD camera)
The new multi-layer lens coating and lens design reduce flare and ghosting,
a common problem with digital cameras and also creates an optimum colour
balance through the entire zoom range.
Three SLD (Special Low Dispersion) glass elements ensure ulta-high resolution
and sharpness. One glass mold and two hybrid aspherical lenses offer excellent
correction for distortion, as well as all types of optical and colour
aberrations.
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.
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.
This lens has a minimum focusing distance of 24cm (9.4”) throughout
the entire zoom range.
