The widest rectilinear autofocus zoom in Canon's full-frame line-up — outstanding centre resolution and full L-series build in a lighter, cheaper package than the old EF 11-24mm f/4L it effectively replaces. Needs heavy digital correction for distortion and vignetting at 10mm, but is a favourite for architecture, interiors and landscape work needing extreme wide-angle with autofocus and IS.
Select up to 2 cameras to compare against the RF 10-20mm f/4L IS STM. It's always pinned as the baseline.
4 cameras compatible with the Canon RF mount.
Base score — computed from verified specs for an enthusiast shooting photo and video. Camera Match adjusts it for your skill level and priorities.