Photo: D. Benjamin Miller (CC0)
RF 10-20mm F4 L IS STM
- 10-20mm
- f/4.0
- Wide Zoom
- Stabilized
- 570 g
- Min focus 0.25 m
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Quick answer
A full-frame ultra-wide zoom for Canon RF mirrorless cameras with image stabilization and a constant f/4 aperture. L-series build.
Pros
- Very wide 10mm start
- Constant f/4
- Image stabilization
- L-series build
Cons
- Bulbous front element limits filter use
- Slower than f/2.8 wide zooms
- Software distortion correction is part of the design
Verdict
A very wide RF option for landscape and architecture. Check filter needs before buying.
About this lens
The Canon RF 10-20mm F4 L IS STM is a wide-angle zoom lens covering 10-20mm at f/4 for Canon RF mount cameras, from the Canon L series with Image Stabilizer and stepping-motor autofocus. It covers wide angles for landscapes, interiors and architecture.
Canon RF 10-20mm F4 L IS STM specifications
- Brand
- Canon
- Mount
- Canon RF
- Focal length
- 10-20mm
- Maximum aperture
- f/4.0
- Lens type
- Wide Zoom
- Format coverage
- full-frame
- Released
- 2023
- Optical construction
- 16 elements in 12 groups
- Aperture blades
- 9
- Image stabilization
- Yes
- Autofocus motor
- STM
- Minimum focus distance
- 0.25 m
- Maximum magnification
- 0.12x
- Weight
- 570 g
- Length
- 112 mm
- Diameter
- 83.7 mm
Specification source: global.canon
What can you shoot with the Canon RF 10-20mm F4 L IS STM?
- Landscapes
- Architecture and interiors
- Astro and wide video
Its moderate maximum aperture works best in good light or with a higher ISO.
Full-frame equivalent and field of view
Calculated from the focal length and crop factor. Not measured.
| Sensor | Crop | Equivalent | Horizontal FOV | Diagonal FOV |
|---|---|---|---|---|
| Full frame | 1.0x | 10–20mm | 84–121.9° | 94.5–130.4° |
| APS-C | 1.6x | 16–32mm | 58.7–96.7° | 68.1–107° |
Frequently asked questions
Is the Canon RF 10-20mm F4 L full-frame?
Yes. It is designed for full-frame RF cameras and also works on APS-C RF bodies with a narrower view.
Does the RF 10-20mm F4 L have image stabilization?
Yes. It has built-in optical IS that works with in-body stabilization on supporting cameras.
RF 10-20mm F4 vs RF 15-35mm F2.8: which should I choose?
The 10-20 goes much wider and is lighter. The 15-35 is brighter at f/2.8 and covers a more general range.
Alternatives for Canon RF from other brands
All Canon RF lensesSame mount, overlapping focal range, closest maximum aperture first.
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