The Sigma 10-20mm F3.5 EX DC HSM is a relatively fast wide-angle zoom designed exclusively for APS-C format Digital SLRs, covering an effective focal range of 15-30mm. This lens squeezes a relatively fast F3.5 constant maximum aperture into a body about 10% larger in each dimension than the company's popular 10-20mm F4-5.6 EX DC HSM. The lens has a minimum focus distance of 24 cm (9.4 inches) throughout the zoom range, and features two Super-Low Dispersion glass and two Extraordinary-Low Dispersion glass elements for the correction of chromatic aberrations.

Product timeline

Sigma announces 10-20mm f3.5 EX DC HSM lens

Mar 3, 2009

Quick specs

Lens type	Zoom lens
Focal length	10–20 mm
Image stab.	No
Lens mount	Canon EF-S, Nikon F (DX), Pentax KAF3, Sigma SA Bayonet, Sony/Minolta Alpha DT
Max aperture	F3.5
Min aperture	F22
Min focus	0.24 m (9.45″)
Max magnification	0.15×
Weight	520 g (1.15 lb)
Length	88 mm (3.47″)

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