Their latest addition (as of the time of this review) is the Sigma AF 8-16mm f/4.5-5.6 DC HSM. Besides being the most extreme rectilinear ultra-wide lens on the market it is also the first one to sport Sigma's latest new innovation - FLD glass elements.

The Sigma 8-16mm F4.5-5.6 DC HSM is the only one of its kind. This is the first ultra wide zoom lens with a minimum focal length of 8mm, designed specifically for APS-C size image sensors.

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

This is my favourite lens without a shadow of a doubt. It's superb for landscapes and producing amazingly artistic photos from all manner of subjects. It's sharp as a knife and tough too.

With mounts for Canon, Nikon, Pentax, Sigma and Sony, the Sigma 8-16mm f/4.5-5.6 DC HSM is the widest APS-C optic on the market... It offers a full-frame equivalent focal length of 12-24mm and has a variable maximum aperture of f/4.5-5.6.

Fabulous. It's like having a full frame camera now. If you shoot landscapes or architecture this lens is a must.

Funhouse of a lens for dramatic effect. Allows shots likely impossible with most other lenses. Not a low-light lens - don't even think about it. Unmatched for carshow, airshow, nature shots where wide is what you want. long end fairly sharp.

Wiiiiide; Great for confined spaces; Amazing perspective in right circumstance; Reasonably priced, considering; Long end fairly sharp

Easy to shoot your feet accidentally; Forget using it in low light; Distortion at periphery at 8mm but what would you expect Not FX; Funky lens cap thingie

Sigma 8-16mm F4.5-5.6 DC HSM is a Variable aperture Auto Focus (AF) Ultra-Wideangle Zoom lens with APS-C / DX max sensor coverage, and it is designed to be used with A Mount cameras. What type of photography is the Sigma 8-16mm F4.5-5.6 DC HSM lens good for?

Autofocus, Distance Scale, Hood supplied, Full-time Manual Focusing, Internal Focusing, Extreme Wide-angle capability, Minimum focus distance of, 0.24m / 9.4 inch, No Weather Sealing, Slow Aperture at Wide end, Slow Aperture at Tele end, Variable Aperture

Autofocus, Distance Scale, Hood supplied, Full-time Manual Focusing, Internal Focusing, Extreme Wide-angle capability, Minimum focus distance of, 0.24m / 9.4 inch, No Weather Sealing, Slow Aperture at Wide end, Slow Aperture at Tele end, Variable Aperture

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

None

inspite of weakness on 8 mm with recommendation of this lens

very good sharpness at 12-16 up to the corners; If stopped down a few very nice pictures high contrast and beautiful colors

expensive; some CA's especially on 8 mm