They’ve often got a whole bunch of electronics built in as well. [Dan K] had just such a lens from Sigma, but wanted to get it working fully with a camera using the Canon EF lens fitting.

Sigma has uncovered an autofocus glitch on some serial numbers of the Sigma 24-70mm f/2.8 DG DN II Art lens. On Thursday, December 19, Sigma Global issued a statement and apologized for the error, ...

(From Sigma lens literature) Sigma's APO 800mm f/5.6 EX DG is one of the EX Series lenses. It is an Apochromatic ultra-telephoto lens with a fast f/5.6 maximum aperture, and incorporates two ...

Navigate Review Jump to review page... (From Sigma lens literature) The Sigma Corporation is pleased to announce the release of the SIGMA 18-200mm F3.5-6.3 II DC OS HSM. This 11.1x high zoom ratio ...

With its excellent Art line reputation, Sigma is one of those brands – and its lenses are discounted even further for its end-of-the-year sales. E-Mount shooters can even find a $100 automatic coupon ...

For more options have a look at our lens top lists which feature optics we've reviewed and compiled into easy-to-read lists so you can make more informed decisions. Sigma 20mm F/1.4 DG DN Art ...