Love the effects with short depth of field. Nice lens for landscapes. Not experienced enough photographer to quote on lens creep or vignetting but for an amateur like me, a lovely wide lens for my entry Nikon D3100, producing very good pics.

Consistent Output; Easily Interchangeable; Lightweight; Quick Focus; Strong Construction

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 build quality of the lens is excellent. It features the crinkle style finish typical for Sigma EX lenses, both zoom and focus ring are damped, the latter a little stiff, though.

Sigma's original 10-20mm f/4-5.6 ticked pretty much all the right boxes, and rapidly became a top seller for users of Canon, Nikon, Olympus, Pentax, Sigma and Sony bodies alike.

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

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

When people ask for recommendations on a super-wide-angle lens, they're often trying to decide between the Tokina 11-16 f/2.8 and the Sigma 10-20mm f/3.5. I tested these two lenses side by side last year and decided on the Sigma 10-20mm for several reasons: 1. Extra range 2.

Yes, I would recommend this to a friend

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

Heavy

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

Nice lens which is sharp and is useful for DX format cameras. I would recommend this lens as a 3rd party option to your camera.