Canon EF 8-15mm f/4L Fisheye USM vs Canon EF 40mm f/2.8 STM
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Verdict at a glance
- Canon EF 8-15mm f/4L Fisheye USM is faster by 4.6 stops (f/8.0 vs f/40.0), letting in more light.
- Canon EF 40mm f/2.8 STM is lighter by 410g.
- Canon EF 8-15mm f/4L Fisheye USM goes wider (8mm vs 40mm).
- Canon EF 40mm f/2.8 STM reaches further (40mm vs 15mm).
- Canon EF 40mm f/2.8 STM is the newer design (2012 vs 2011).
| Spec | EF 8-15mm f/4L Fisheye USM | EF 40mm f/2.8 STM |
|---|---|---|
| Brand | Canon | Canon |
| Mount | Canon EF | Canon EF |
| Type | Fisheye | Prime |
| Focal length | 8-15mm (wider) | 40mm |
| Max aperture | f/8.0 (faster) | f/40.0 |
| Released | 2011 | 2012 |
| Blades | 7 | 7 |
| Format | full-frame | full-frame |
| Groups | 11 | 4 |
| Af motor | USM | STM |
| Elements | 14 | 6 |
| Weight g | 540.0 | 130.0 (lighter) |
| Length mm | 83.0 | 22.8 |
| Diameter mm | 78.5 | 68.2 |
| Min focus m | 0.15 (closer focusing) | 0.3 |
| Max magnification | 0.34 | n/a |
| Filter mm | n/a | 52 |
Canon EF 8-15mm f/4L Fisheye USM
A zoom fisheye giving a circular image at 8mm and a full-frame diagonal fisheye at 15mm on full-frame bodies. Weather-sealed L design.
Pros
- Zoom fisheye range
- Circular image at 8mm
- Weather-sealed
- Crisp optics
Cons
- Fisheye distortion limits general use
- Exposed bulbous front element
- No front filter thread
Canon EF 40mm f/2.8 STM
A pancake-style standard prime with a stepping motor. Very short and light, working on full-frame EF and APS-C EF cameras.
Pros
- Extremely compact
- Light (130 g)
- Quiet STM focusing
Cons
- f/2.8 is not fast
- No stabilization
- Little background blur