N°102996 · Family detail
CosinaPrime·CANON EF mount·2007
Cosina Voigtlander Ultron 40mm F/2 ASPH SL II
Specifications01
MountCANON EF
Focal length40mm
Max aperturef/2
TypePrime
Release year2007
Weight200 g
Filter size52 mm
Min focus distance0.38 m
Max magnification0.1429
Aperture blades9
Optical elements6
Groups5
AutofocusNo
StabilizationNo
Aperture controlNone
The aperture is controlled from the camera(Canon EF)
Aperture ring (Manual settings + Auto Exposure setting)(Nikon F, Pentax K)
Lens hoodScrew-type dome-shaped
TeleconvertersNot available
EraDigital era
Production statusDiscontinued
Additional Info02
Lens TypeWide-angle prime lens
Summary02
Ultron 40mm f/2 ASPH SL II is a 40mm prime lens for Canon EF mount, offering a fast f/2 maximum aperture for low-light and general-purpose photography.
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The Canon EF mount has a flange distance of 44 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- Native lenses set the aperture, and often the focus, electronically. On a plain adapter they do not work. Use an electronic adapter made for this pair; for many pairs nobody makes one. Fully manual lenses are the exception.
- Sony EAdapter · 26 mm
The camera mount (46.1 mm) is narrower than the lens mount (54 mm). A large rear element can darken the corners.
- Canon RFAdapter · 24 mm
- Nikon ZAdapter · 28 mm
- Fujifilm XAdapter · 26.3 mm
- L-MountAdapter · 24 mm
The camera mount (51.6 mm) is narrower than the lens mount (54 mm). A large rear element can darken the corners.
- Micro Four ThirdsAdapter · 24.75 mm
- Fujifilm G (GFX)Adapter · 17.3 mm
Covers full-frame: it can vignette on a medium format sensor.
- Canon EF-MAdapter · 26 mm
- Canon EFNative
No plain adapter reaches infinity focus on: Nikon F.
Other Mounts03
This lens family is also indexed in 2 other mounts.