Canon EF 20mm f/2.8 USM vs Irix Firefly 11mm f/4 - Monture Canon EF
Prices & availability
Specification comparison
Highlighted rows differ between the two models.
| Specification | Canon EF 20mm f/2.8 USM | Irix Firefly 11mm f/4 - Monture Canon EF |
|---|---|---|
| Mount | ||
| Mount | canon-ef | canon-ef |
| Optics | ||
| Focal (difference) | 20 mm | 11 mm |
| Aperture (difference) | f/2.8 | f/4.0 |
| Prime | Yes | Yes |
| Stabilization | No | No |
Verdict
Pick Model A if you prioritize low-light performance and a brighter viewfinder experience, thanks to its wider f/2.8 aperture. Model B stays the better choice if you need an ultra-wide 11mm focal length for expansive landscapes or architecture, despite its slower f/4 aperture. Budget is nearly identical, so decide based on focal length and aperture needs.