N°105988 · Family detail
CosinaWide·CANON FD mount
Cosina 20mm F/3.8 MC
Specifications01
MountCANON FD
Focal length20mm
Max aperturef/3.8
TypeWide · Prime
Weight184 g
Filter size62 mm
Min focus distance0.2 m
Max magnification0.1562
Aperture blades5
Optical elements9
Groups8
AutofocusNo
StabilizationNo
Aperture controlAperture ring (with or without Auto Exposure setting)
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeUltra-wide angle prime lens
Summary02
Cosina 20mm F/3.8 MC is a Canon FD-mount prime wide-angle lens intended for general wide-angle photography and landscapes, with a constant f/3.8 aperture and manual focus operation.
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The Canon FD mount has a flange distance of 42 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- FD lenses stay at full aperture until the camera moves a lever on the lens. Use an FD adapter with a ring that moves this lever.
- Sony EAdapter · 24 mm
- Canon RFAdapter · 22 mm
- Nikon ZAdapter · 26 mm
- Fujifilm XAdapter · 24.3 mm
- L-MountAdapter · 22 mm
- Micro Four ThirdsAdapter · 22.75 mm
- Fujifilm G (GFX)Adapter · 15.3 mm
Covers full-frame: it can vignette on a medium format sensor.
- Canon EF-MAdapter · 24 mm
No plain adapter reaches infinity focus on: Canon EF, Nikon F.
Sources03
thelensdb.comVisit ↗
Other Mounts03
This lens family is also indexed in 1 other mount.