Canon RF 28-70mm f/2.8 IS STM Review

Canon has long offered a fast standard zoom in the RF mount, but the RF 28-70mm f/2.8 IS STM takes a different approach than its exotic f/2 sibling. At 495 grams and $1,149, this lens trades some reach on the wide end (28mm instead of 24mm) for a package that feels more accessible. It brings L-series weather sealing, a collapsible design, and 5.5 stops of optical stabilization (7.5 stops with IBIS), making it a practical workhorse for Canon RF shooters who want trinity-level performance without the bulk or price premium.

Reviewers consistently praise its optical quality, especially in the low to mid-zoom range where sharpness is described as excellent. The long end shows some corner softness but remains strong in the center. Build quality matches Canon's premium line, and the STM motor delivers quiet, smooth autofocus with minimal focus breathing. The 0.24x magnification and 9.4-inch minimum focus distance add versatility for close-up work. This is a well-rounded standard zoom that punches above its weight class, delivering professional results in a package that won't weigh down your kit.