The Sigma AF 8-16mm f/4.5-5.6 DC HSM may be the new star in this lens segment. It's very sharp across the whole range straight from the max. aperture. Lateral CAs are also very well controlled. That's quite an achievement for such an extreme ultra-wide angle zoom lens.

This lens is a joy to use. I have taken some great photos with it. I have it's big brother, the 12-24 V2 and it is easily as good as that, if not better, but on a Canon crop it is equivalent to 13-26, not 12-24.I still don't understand why people on this forum give poor ratings to what is obviously...

Compact and light; fast to focus; razor sharp; image quality; build quality

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Announced at PMA 2010 in February, the new Sigma AF 8-16mm f/4.5-5.6 DC HSM lens is designed specifically for DSLR cameras with APS-C size image sensors and boasts the widest angle of view of its type.

Sigma has embraced the ultra-wide sector, offering 4.5mm, 8mm, 10mm and 15mm prime lenses as well as 10-20mm zooms in variable aperture (f/4-5.6) and fixed aperture (f/3.5) versions and a 12-24mm zoom. There is also this new 8-16mm zoom.

Excellent 8mm performance

Weaker 16mm performance

Very hard to correct chromatic aberrations, strange colors. Sharp. Tried on Canon 80d and returned after a couple of days. ( real estate photographer)

The lens is very sturdy and the image is great in day light. The images are very sharp but its not that great for night photography. If you are looking to buy this lens, I suggest you check out the real item or silmilar items because 8-16mm is really wide.

SUPER and I mean SUPER wide

Wight; Not great for night photography

Owning a Olympus E5 I have always wanted the Zuiko 7-14mm but the price was just to high. I have recently moved to Sony and picked up this lens for less than half the cost of the 7-14mm. With the crop factor it is actually 2mm wider than the Zuiko. The Sigma is a well made lens.

Build quality; Sharp; nice smooth focus ring; price

Can't use an ND grad; Can flare easily

Yes, I would recommend this to a friend

Color; Very little flare; Very Sharp

No Filter; Poor in Low Light; Slow aperture

good lens, excellent results.

Consistent Output; Durable; Easily Interchangeable; Fast / accurate auto-focus; Lightweight; Rugged

Never bought a Sigma before, and I had read that some of their wide-angle lenses felt a bit cheap. Pleased to say the 8-16mm looks and feels like the reasonably premium lens that it is. Nice and weighty, smooth focus and zoom rings, and a very snug fit to my A700 a-mount.All lenses are compromises.

Sharp Focus; Strong Construction

Slow Focus