For this review, the lens was tested on a Canon EOS 5DS R using Imatest ... In summary, the Canon EF 400mm f/2.8L IS III USM lens is a superb performer. You can view additional images in the ...

The Canon EOS R1 is a high-speed professional camera built to withstand the rigors of professional use, but it comes at a ...

If you make your money from sports or wildlife photography, or just take it very seriously, a top quality super telephoto lens is a must. The new Canon EF 400mm f/4 DO IS II USM is an updated version ...