With a brighter f/3.5 aperture, the new Sigma 10-20mm lens will be better for low-light photographers. Priced at ￡440, does the new lens warrant the price tag?

Very good resolution; Good build quality; Excellent value; Low levels of Chromatic Aberrations

82mm filter size; Stiff manual focus ring

The Sigma 10-20mm F3.5 EX DC Lens is a new ultra-wide angle zoom lens

Released earlier this year, the Sigma 10-20mm f/3.5 EX DC HSM is a mouthful to say but a true pleasure to work with.  I begrudgingly write this review because it means I have to send the test lens back to Sigma…. …and I really don't want to!

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. Fortunately, it is not only equal to the challenge but also pulls ahead in several important respects.

Good all-round performance

Nothing really

The Sigma 10-20mm f/3.5 EX DC HSM is available with lens mounts for Sigma, Canon, Nikon, Pentax and Sony DSLRs, and provides a 15-30mm focal range. The lens features 13 elements in nine groups with one SLD (Special Low Dispersion) and two ELD (Extraordinary Low Dispersion) glass elements designed to...

The Sigma 10-20mm is always with me on my family vacations. The 20mm is perfect to capture everythin

Sharp at all F-Stops Lightweight & versatile

Vignette and fish eye effects with lens at its widest

Sigma's widest nonfisheye and fastest ultrawide zoom, the constant-aperture 10-20mm f/3.5 belongs to the EX family of sturdily built, optically gifted Sigmas. To control multiple forms of aberration, it uses three low-dispersion glass elements and four aspheric elements-the most of any Sigma.

This professional standard lens impressed our tester. Find out why by reading the Sigma 10-20mm f/3.5 EX DC HSM lens review.

Stunning performance

Slight focusing stiffness

Sigma's update to their popular 10-20mm ultra-wide lens now offers a faster constant aperture of f/3.5 throughout the zoom range, along with a Hyper Sonic focus motor.

Very good resolution; Good build quality; Excellent value; Low levels of Chromatic Aberrations

82mm; Stiff manual focus ring

Yes, I would recommend this to a friend

Consistent Output; Fast / accurate auto-focus; Strong Construction

Heavy