Lens Details
Canon
RF45mm F1.2 STM
$469~
MSRP (prices vary)
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Released: November 6, 2025
Who it's for
The Canon RF45mm F1.2 STM is a 45mm f/1.2 prime lens — a short-telephoto / portrait option. Here's what it's best at and what to keep in mind.
Best for
- ✓Portraits and low light — a fast f/1.2 aperture for blurred backgrounds.
45mm
Focal Length
f/1.2
Max Aperture
Full-Frame
Coverage
−
Stabilized
346g
Weight
67mm
Filter
Full Specifications
Optical Design
| Focal Length | 45mm |
|---|---|
| Lens Type | Prime |
| Optical Elements | 9 |
| Optical Groups | 7 |
Aperture & Iris
| Maximum Aperture | f/1.2 |
|---|---|
| Minimum Aperture | f/16 |
| Aperture Blades | 9 |
| Rounded Aperture | Yes |
Coverage & Angle
| Format Coverage | Full-Frame |
|---|---|
| Lens Mount | Canon RF |
| Angle of View | 51° |
| 35mm Equivalent | − |
Focus
| Autofocus | Yes |
|---|---|
| Focus Motor | STM |
| Focus Limiter | No |
| AF/MF Switch | Yes |
| Min Focus Distance | 45 cm |
| Max Magnification | 0.13x |
Stabilization & Video
| Optical Stabilization | No |
|---|---|
| Aperture Ring | No |
| Declickable Aperture | No |
| Parfocal | No |
| Internal Zoom | No |
General
| Price (MSRP) | $469 |
|---|---|
| Filter Size | 67mm |
| Diameter | 78mm |
| Length | 75mm |
| Weight | 346g (12.2 oz) |
| Weather Sealed | No |
| Tripod Collar | No |
