Canon EF 100-400mm f/4.5-5.6L IS II USM 鏡頭

That zoom ring is noticeably smoother and better damped than the old Mk I, making tracking birds through the viewfinder much more pleasant. The sharpness wide open at 400mm honestly surprised me, it's very usable. A solid upgrade that feels worth every penny.

I was worried about hand-holding this lens for a full day of wildlife shooting, but the improved Image Stabiliser makes it totally doable. The sharpness at 400mm is noticeably better than my old lens, even wide open.

The zoom ring on this is so smooth it feels like butter, and that three-mode stabilizer let me shoot handheld at 400mm without a tripod. Autofocus locked onto a moving bird faster than I could frame it, and the sharpness at the long end honestly surprised me. Worth every penny, even if my arm gets t