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Canon RF 45mm F1.2 STM
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Canon · f/1.2 · Canon RF mount

Canon RF 45mm F1.2 STM

Where to buy — 2 offers
Mount
KEY FACTS
BrandCanon
Release Year2025
Production StatusIn Production
Lens MountCanon RF
SystemCanon EOS R
What We Like
+Ultra-affordable f/1.2 aperture at $470 - exceptional value for fast-aperture glass
+Compact and lightweight at 346g, lightest f/1.2 lens in Canon RF lineup
+Smooth, quiet STM autofocus with full-time manual focus override
+Strong bokeh rendering with 9-blade circular aperture for subject separation
+Canon's first PMo aspherical element in f/1.2 design reduces aberrations
+Natural 45mm focal length ideal for portraits, lifestyle, and general-purpose shooting
Worth Knowing
−Lacks weather sealing and optical stabilization despite moderate price point
−Significant distortion and vignetting at f/1.2 requiring digital correction in-camera
−Excessive chromatic aberration (color fringing) at maximum aperture
−No lens hood included; optional ES-73B hood costs additional $59 separately

General

Brand
Canon
Release Year
2025
Production Status
ⓘ
Current status of lens manufacturing (e.g., in production, discontinued).
In Production
Lens Mount
ⓘ
The lens mount will tell you what type of lens range you can fit onto the camera body. Often the same camera company will have different lens ranges for different cameras.
Canon RF
System
ⓘ
Indicates which camera system the lens is designed to attach to.
Canon EOS R
Maximum Format
ⓘ
Largest sensor size compatible with the lens.
Full Frame
Read our notes on general
The Canon RF 45mm F1.2 STM is a fast standard prime lens for Canon RF-mount 35mm full-frame mirrorless cameras, compact and lightweight at 346g while offering a very bright maximum aperture of f/1.2 for low-light performance and bokeh effects. Not focused on pure optical performance, this lens offers budget-conscious Canon photographers the ability to capture strong background blur at a normal focal length with distinctive image character, priced well under $500 and destined to be popular for portraits, lifestyle, street, and creative work. While it offers bright aperture and lightweight design, it suffers from significant optical shortcomings including distortion, chromatic aberration, and lack of weather sealing, with STM autofocus that is reliable but less smooth than Canon's higher-end motors.

Physical

Lens Weight
346 g
Lens Diameter
ⓘ
Width of the lens at its widest point
78 mm
Lens Length
ⓘ
How long the lens is from front to back.
75 mm
Front Filter Size
ⓘ
Diameter of attachable filters.
67 mm

Optics

Focal Range
ⓘ
Shortest to longest focal length of the lens (zoom range start - end )
45 mm
Aperture Range
ⓘ
Largest aperture at the lens's shortest focal length to longest focal length (aperture range start - end)
1.2
Blades
ⓘ
Number of diaphragm blades in aperture
9020
Zoom Lens
ⓘ
Zoom allows you to vary the focal length, change between long shots and close-ups
No
Closest Focusing Distance
ⓘ
Minimum distance for a subject to be in focus.
45 cm01500
Autofocus Mode
Yes

Features

Weather Sealing
ⓘ
Weather sealing capabilities will give you more confidence when shooting in unfavourable conditions.
No