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

My first experience with a wide angle lens! Whilst this lens in comparison to a standard zoom affords additional coverage, there are unfortunately, a couple of negatives. At its widest angle there is noticeable fringing / chromatic aberration towards the edges of the image which in most cases can be...

Easy to use; Build quality

Bulky

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.

This lens is more than I ever expected. The focal lengths are perfect for property photos and a fast lens correction in Lightroom puts everything into place. I love the fixed 3.5 and the 10mm. I have no problems with the SB800 flash providing enough light and coverage.

Consistent Output; Fast / accurate auto-focus; Lightweight

xcellent. Wide Angle,Very sharp and fast and for low lite.

These Sigma 10-20mm F3.5 is my first Lens from Sigma; Absolutely very sharp in my 7d camera it gives me an outstanding color and a wide angle in a tight space.

They should make it zoom

I have just recently bought this lens and it is fantastic. It is amazingly crisp and works a treat. Highly recommended.

Although I can't compare this to other UWA lenses I can compare it to other zoom lenses I have (such as Sigma 17-70) and this lens beats them hands down. Feel and build quality is excellent. HSM focussing is wonderful. Flare resistance is surprisingly good for a UWA.

Very sharp center; nice feel; good auto focus; very useful range

Corners at 10mm could be sharper

Sharp images across it's range. Quality build. Worth every cent...

"I love this lens! I recently purchased and used it with my Nikon D5100, and I was awestruck by the results. I'm going to now begin with the comment(s) most people look for: ****** CONS ******.

This Sigma wide-angle comes in at a very reasonable price for what it is and for its features. It's also available for plenty of lens mounts. This lens is considered by some photographers as the benchmark for APS-C wide-angles, though our tests suggest this may not now be the case.