Canon RF 45mm f/1.2 STM Lens

The Canon RF45mm f/1.2 STM is a compact, standard prime lens for the RF mirrorless system, featuring a wide f/1.2 aperture. Announced November 2025, it weighs approximately 346 g and delivers natural perspective, shallow depth-of-field, smooth autofocus, and strong low-light performance. Canon Canada describes it as an affordable, lightweight lens delivering stunning low-light results and soft expressive imagery—ideal for portraits, lifestyle, or everyday shooting. Compact RF-mount design with large diameter and short back focus. PMo aspheric lens element reduces aberrations. Gear-type STM autofocus with magnetic detection for smooth, quiet focus. Includes a customizable control ring for ISO, white balance, etc. Nine-blade circular aperture for cinematic bokeh. Super Spectra coating minimizes flare and ghosting. Electronic focus-breathing correction support. Electronic distance scale available on compatible cameras. Lightweight design (~346 g / 12.2 oz) for easy handling. 100% Dual Pixel CMOS AF coverage in full-frame, ~90% on APS-C. Compatible with Canon ES-73B lens hood. 60 Month Warranty Mount Canon RF Format Full-frame (64 mm image circle) APS-C equivalent ≈ 72 mm (on R7/R50) Focal Length 45 mm Maximum Aperture f/1.2 Minimum Aperture f/16 Optical Construction Includes PMo aspheric lens Diaphragm Blades 9, circular AF Motor Gear-type STM with magnetic detection Focus Coverage (Full-frame) Approx. 100 × 100% Focus Coverage (Manual AF) Approx. 90 × 100% Closest Focusing Distance 0.45 m (1.5 ft) Maximum Magnification Approximately 0.13× Filter Thread 67 mm Dimensions ≈ φ73.7 × 69.5 mm Weight Approx. 346 g (12.2 oz) Lens Hood Canon ES-73B bayonet mount (reversible) Lens Coating Super Spectra coating Image Stabilization No (reliant on camera IBIS) Distance Scale Electronic (viewfinder/LCD)