The RF 100-400mm f/5.6-8 IS USM is about 6. ... opt for Sigma’s 24-105mm F4 DG OS HSM Art lens. It’s less expensive than Canon’s EF 24-105mm f/4L IS II USM and delivers great images.

However, that lens retails at £13,549 and is for high-end professionals. For most people, the Canon EF 100-400mm f/4.5-5.6L ...

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.