Canon rf 400mm f 2 8l is usm vs ttartisan 500mm f 6 3?

The Canon RF 400mm f/2.8L IS USM is the one I'd pick for moving subjects. It has autofocus, image stabilisation and a wide f/2.8 aperture, so it gathers far more light. On a full-frame body like the Canon EOS R5 it frames 400mm, and on an APS-C Canon it reaches about 640mm.

The TTArtisan 500mm f/6.3 gives you more reach, 500mm on full frame and about 800mm on APS-C Canon RF. But it is manual focus, has no stabilisation, and f/6.3 is dim. It suits patient shooters on a tripod photographing still subjects.

If you're deciding between them for birds or sport, read Wildlife and sport first, and check buying used before you spend.

Written by Claude from this site's pages.