Specifications#
- Brand
- Canon
- Model
- EF-M 22mm f/2 STM
- Lens type
- Wide-angle prime
- Focal length
- 22 mm
- Maximum aperture
- f/2
- Image circle
- APS-C (23.5×15.6 mm)
- Mount(s)
- Canon EF-M
- Projection
- Rectilinear
- Autofocus motor
- stepping motor (STM)
- Introduced
- 2012
- Lensfun correction profile
- Yes — distortion/vignetting/TCA
Equivalent focal length on different cameras#
Field of view and depth-of-field equivalence when this lens is used on bodies with different sensor sizes (natively or via an adapter).
| Camera format | At 22 mm | Equiv. aperture (DoF) |
|---|---|---|
| APS-C | 33 mm · 65° | f/3.0 |
| APS-C (Canon) | 35 mm · 63° | f/3.2 |
| Micro Four Thirds | 44 mm · 52° | f/4.0 |
Depth of field & background blur#
Computed on its native APS-C format (CoC 20 µm). “Blur @2 m” is the size of an out-of-focus point at infinity, as a percentage of frame width, with the subject at 2 m — a simple bokeh index. Full table: 24 mm f/2 on aps-c.
| Focal | Aperture | at 1 m | at 2 m | at 5 m | at 10 m | Hyperfocal | Blur @2 m |
|---|---|---|---|---|---|---|---|
| 22 mm | f/2 | 15.9 cm | 65.6 cm | 4.80 m | 46.1 m | 12.4 m | 0.5% |
| 22 mm | f/4 | 32.4 cm | 1.42 m | 22.8 m | ∞ | 6.21 m | 0.3% |
| 22 mm | f/8 | 70.3 cm | 4.33 m | ∞ | ∞ | 3.12 m | 0.1% |
Handheld & night-sky limits#
NPF assumes typical 20–24 MP sensors (≈6 µm pixels on full frame, ≈3.9 µm on APS-C, ≈3.3 µm on Micro Four Thirds).
| Body | Min. handheld shutter (longest focal) | 500 rule at 22 mm | NPF at 22 mm, f/2 |
|---|---|---|---|
| APS-C | 1/30 s | 15 s | 8 s |
| APS-C (Canon) | 1/40 s | 14 s | 8 s |
| Micro Four Thirds | 1/40 s | 11 s | 8 s |
Compatible cameras#
Bodies in our database with a native Canon EF-M mount. Full-frame bodies switch to an APS-C crop with this lens.
Adapt it to other systems#
Similar lenses#
Frequently asked questions#
Is the Canon EF-M 22mm f/2 STM full frame?
No — it is designed for APS-C sensors. On a full-frame body it vignettes or triggers crop mode.
What is the Canon EF-M 22mm f/2 STM equivalent to on APS-C?
Its focal length is already the real value for APS-C: 22 mm frames like 34 mm on full frame.
What is the Canon EF-M 22mm f/2 STM good for?
As a wide-angle prime it suits street, environmental portraits, landscapes and astro.
Sources & licences#
- Lensfun lens database — CC BY-SA 3.0
Last updated October 03, 2026 · How we calculate · Sources