Canon's stabilised f/4 telephoto zoom, the lightweight professional's favourite for travel.
The Canon EF 70-200mm f/4L IS USM launched in 2006, adding image stabilisation to the already excellent 70-200mm f/4L. The combination of L-series optics, IS, and lightweight construction made it a favourite of travel, landscape, and event photographers who wanted professional quality without the weight of the f/2.8.
Optical quality is outstanding and essentially identical to the non-IS version with excellent sharpness across the frame. IS provides approximately 4 stops of stabilisation which transforms handheld use at 200mm. Ring USM autofocus is fast and silent. Build is L-series with weather sealing and a tripod collar.
Canon EF mount only, 67mm filter thread. The IS II version followed in 2018 with improved IS. The RF 70-200mm f/4L IS USM is the mirrorless successor. The EF version works on RF bodies via adapter.
Strong used market. Check IS operation, USM motor, and the tripod collar for any looseness. This is arguably the best value telephoto zoom Canon has ever made and many professionals prefer it to the heavier f/2.8. Holds value well.