EF 40 mm f/2.8 STM vs Ultron 40 mm f/2 SL II Aspherical
Canon
EF 40 mm f/2.8 STM

Voigtlander
Ultron 40 mm f/2 SL II Aspherical
Here we are comparing the Canon EF 40 mm f/2.8 STM and the Voigtlander Ultron 40 mm f/2 SL II Aspherical. The Canon EF 40 mm f/2.8 STM is a 40mm wide-angle prime lens with a maximum aperture of f/2.8, released in 2012. The Voigtlander Ultron 40 mm f/2 SL II Aspherical is a 40mm wide-angle prime lens with a maximum aperture of f/2, released in 2007.
There is a 5 years difference between the Voigtlander Ultron 40 mm f/2 SL II Aspherical and the Canon EF 40 mm f/2.8 STM — the newer design may benefit from more recent optical engineering and coatings.
Below you will find a detailed side-by-side comparison of their specifications, features, and key differences.
Shopping links may contain affiliate codes that support this site at no extra cost to you.
| Compare | Lightest | Fastest Aperture |
|---|---|---|
| Mount | ||
| Sensor Size | Full Frame | Full Frame |
| Best For | Portrait Street | Portrait Street |
Price & Availability | ||
| Shop | ||
Optical Specifications | ||
| Focal Length | 40 mm | 40 mm |
| Aperture | f/2.8 | f/2 |
| Aperture Blades | 7 | 9 |
Features | ||
| Autofocus | Yes | No |
| Image Stabilization | No | No |
| Weather Sealed | No | No |
Close-up Performance | ||
| Min. Focus Distance | 0.3 m | 0.38 m |
| Max. Magnification | - | - |
Physical Specifications | ||
| Weight | 130 g | 200 g |
| Length | 22.8 mm | 63 mm |
| Diameter | 68.2 mm | 24.5 mm |
| Filter Thread | 52 mm | 52 mm |
Price & Availability | ||
| Release Year | 2012 | 2007 |
| Shop | ||
Shopping links may contain affiliate codes that support this site at no extra cost to you.
Comparing Canon EF 40 mm f/2.8 STM (40 mm, f/2.8) and Voigtlander Ultron 40 mm f/2 SL II Aspherical (40 mm, f/2).
Canon EF 40 mm f/2.8 STM is the lightest at 130 g, Voigtlander Ultron 40 mm f/2 SL II Aspherical weighs 200 g.
Voigtlander Ultron 40 mm f/2 SL II Aspherical offers the fastest maximum aperture at f/2, allowing for better low-light performance and shallower depth of field.
Canon EF 40 mm f/2.8 STM can focus closest at 0.3 m minimum focus distance.
Use the detailed comparison table below to see all specifications side-by-side and find the perfect lens for your photography needs.
Discover the best lenses for your camera mount and photography style
Top-rated Canon EF lenses optimized for Street Photography
Top-rated Nikon F lenses optimized for Street Photography
Top-rated Pentax K lenses optimized for Street Photography
Explore all curated lens recommendations by mount and photography type