Sigma 10-20mm f4-5.6

 

Sigma 10-20mm f4-5.6

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Sigma 10-20mm f4-5.6

Sigma 10 20mm f4-5.6

Sigma 10 20mm f4-5.6

Specifications:

Focal length:10-20mm

Max aperture: f4-5.6

Weight:470g

Dimensions:83.5-81mm

Close focus distance: 24 cm

Filter size:77mm

Angle of view

Angle of view: 60-109 degree

Sigma 10-20mm new version

This Sigma has a new improved version with a constant f3.5 aperture.

Built quality:

Seems the Sigma 10-20mm f4-5.6 has a good nice built quality. The lens feels small, well built, nicely can operate. The lens little lighter then the Tokina 11-16 f2.8 and feels not so robust.

Optical quality

The Sigma 10-20 can make nice sharp results with nice colours. Not very good against flare(general problem for this wide angle lenses). Seems though the Tokina 11-16 is better especially in the corners, and has better contrast. The Sigma has less CA though, and the Sigma has better wider range. This Aps-C sized wide angles show more similarity than difference. The optical differences are not big. Samyang also produce wide angle lenses(8 f3.5, 14f2.8) but without autofocus for lot less money. The Samyang has very good resolution, but lot more distortion as well, and the angle of view of the 14mm is narrower. The 8mm has much bigger distortion, but the biggest field of view. The Canon 10-22 seem better in the corners than the Sigma, and perhaps better against flare.
sigma1020img_0087

Click to enlarge Sigma 10-20mm f4-5.6 on Canon 30d 10mm f5.6 ISO 400 1/60s no post-processing except resizing to 1200 pix.

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Main rivals:

Tokina 11-16mm f2.8, Tokina 12-24mm f4, Canon 10-22mm f3.5-4.5, Nikon 10-24, Tamron 10-24, Samyang 14mm f2.8, Samyang 8mm f3.5

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