Reviews and Problems with Sigma 10-20mm F4-5.6 EX DC /HSM
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Sigma 10-20mm F4-5.6 EX DC HSM Lens Review
SLR Lens and Camera Reviews
6 June 2009
Summary: Sigma 10-20mm f/4-5.6 EX DC HSM is a great value for your money. The lens is one of the widest zoom lenses for APS-C dSLRs available on the market. Its build quality matches (and some might even claim exceeds) that of a Canon's L lens. Image quality rivals other ultra wide zooms on the market.
Excerpt: The Sigma 10-20mm f/4-5.6 EX DC HSM Lens is a very good quality ultra-wide angle lens with a feature that everyone can love - a relatively affordable price tag. I highly recommend that APS-C sensor format body owners include a 10-20mm (or similar) focal length lens in their kit as such a lens is extremely useful. And the Sigma 10-22mm f/4-5.6 could be a good choice to fill your UWA lens slot in your kit.
Conclusion: The Sigma 10-20mm F4-5.6 EX DC HSM is, on paper at least, a very attractive option for APS-C users looking for an ultra-wideangle zoom. The standout selling points are undoubtedly that 10mm wideangle view and the HSM focusing motor, which when coupled with Sigma's traditionally keen pricing, makes for a compelling overall package.
Pros: Equal widest angle in its class, Very low chromatic aberration, Fast and silent HSM autofocus, Good build quality
Cons: Rather inconsistent sharpness (partially due to curvature of field), Pronounced, complex distortion at 10mm
Excerpt: Following in the footsteps of Sigma’s full-frame 12-24mm DG zoom, the 10-20mm DC version has a lot to live up to. What Digital Camera's Sigma 10-20mm EX DC HSM review sees if it lives up to the...
Conclusion: With the wide field of view that this lens gives the digital SLR owners that require panoramic style angles, this lens is an answer to their prayers. The performance is excellent and the size and weight is little more than a standard zoom. Aimed at an area where there are no contenders stepping down from the 35mm arena and fulfilling a definite need, Sigma should be onto a winner here.
Pros: Good performance, nudging excellent at the wide end., Ability to use standard filters, Weight, size and handling, Price
Cons: Softish edges in middle of range., Slight pincushion at 20mm end.
Conclusion: An ultra wideangle lens is, in fact, a must for every landscape or journalistic photography fan. Is the Sigma, presented here, worth our interest then? In our opinion, yes, it is, although its overall score is rather slightly lower than that of the Canon 10-22 mm. The Sigma can boast of better chromatic aberration correction and smaller dimensions but the Canon can offer sharper images, better fastness and a wider focal lengths range.
Cons: very high vignetting in the whole range of focal lengths even on stopping down the aperture,, average image quality at the edge of the field,, slow fastness.
Excerpt: Though this corrected 10-20mm lens from Sigma comes at a relatively cheap price, it doesn't strike you as cheap when you use it. It has a real quality feel, enhanced with the matt finish that's standard with a Sigma EX series lens. The zoom and manual focus rings are virtually identical in size, with the zoom ring placed at the rear of the lens.