The lens in question was a Sigma 15-30mm f/3.5-4.5 EX DG, built to work with a Sigma camera using the SA mount. As it turns out, the SA mount is actually based on the Canon EF mount, using the ...

Rumors suggest that Sigma is working on a world-first 200mm f/1.8 telephoto prime for Sony and Leica full-frame mirrorless cameras.

Our guide to the best Canon RF mount lenses, by Joshua Waller, is here to help you find the perfect glass for your EOS R ...

EF-Mount Lens/Full-Frame Format Aperture Range: f/2.8 to f/22 One Super UD Element, Two UD Elements Three Aspherical Elements ...

The lens in question was a Sigma 15-30mm f/3.5-4.5 EX DG, built to work with a Sigma camera using the SA mount. As it turns out, the SA mount is actually based on the Canon EF mount, using the ...

In summary, the Canon EF 400mm f/2.8L IS III USM lens is a superb performer. You can view additional images in the Equipment Database, where you can add your own review, photos and product ratings.