Canon EF 50mm f/1.8 STM vs Sigma 50mm f/1.4 DG HSM [A]
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
![Sigma 50mm f/1.4 DG HSM [A]](https://thumb.wikimedia.org/wikipedia/commons/thumb/b/b8/Sigma_50mm_F1.4_DG_HSM_-_A_%2814220123618%29.jpg/500px-Sigma_50mm_F1.4_DG_HSM_-_A_%2814220123618%29.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=thumbnail)
Verdict at a glance
- Sigma 50mm f/1.4 DG HSM [A] is faster by 0.7 stops (f/1.4 vs f/1.8), letting in more light.
- Canon EF 50mm f/1.8 STM is lighter by 655g.
| Spec | EF 50mm f/1.8 STM | 50mm f/1.4 DG HSM [A] |
|---|---|---|
| Brand | Canon | Sigma |
| Mount | Canon EF | Canon EF |
| Type | Prime | Prime |
| Focal length | 50mm | 50mm |
| Max aperture | f/1.8 | f/1.4 (faster) |
| Released | 2015 | n/a |
| Blades | 7 | 9 |
| Format | full-frame | full-frame |
| Groups | 5 | 8 |
| Af motor | STM | HSM |
| Elements | 6 | 13 |
| Weight g | 160.0 (lighter) | 815 |
| Filter mm | 49 | 77 |
| Length mm | 39.3 | n/a |
| Diameter mm | 69.2 | n/a |
| Min focus m | 0.35 (closer focusing) | 0.4 |
| Max magnification | 0.21 | 0.18 |
Canon EF 50mm f/1.8 STM
Compact 50mm f/1.8 prime with an STM stepping motor and a metal mount, replacing the older f/1.8 II. Covers full frame and works on APS-C EOS bodies.
Pros
- Fast f/1.8 aperture
- Light and small
- Quiet STM focusing
- Metal lens mount
Cons
- No image stabilization
- Corners soften at f/1.8
- Focus ring is electronic rather than mechanically coupled
Sigma 50mm f/1.4 DG HSM [A]
A 50mm f/1.4 full-frame fast standard prime lens, the Sigma 50mm f/1.4 DG HSM [A] is designed for Canon EF mount bodies, with Hyper Sonic Motor autofocus. A wide-aperture standard prime from Sigma's Art line.