Canon RF 100-400mm F5.6-8 IS USM Review

The RF 100-400mm F5.6-8 IS USM is a very affordable super-telephoto zoom lens for Canon's full-frame mirrorless cameras, offering a versatile 4x focal range in a compact, lightweight design. Read our in-depth Canon RF 100-400mm lens review to discover if this is the best telephoto lens for most people, complete with a gallery of full-size sample photos...