N°110028 · Family detail
KowaPrime·KOWA SIX mount·1970
Kowa 40mm F/4
Specifications01
MountKOWA SIX
Focal length40mm
Max aperturef/4
TypePrime
Release year1970
Weight900 g
Filter size95 mm
Min focus distance0.4 m
Optical elements9
Groups7
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
Lens hoodNot available
TeleconvertersNot compatible
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeUltra-wide angle prime lens
Summary02
Kowa 40mm f/4 fixed prime lens for the KOWA SIX mount, intended for medium-format stills (often used as a general-purpose or portrait focal length depending on format).
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The Kowa Six mount has a flange distance of 79 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- Most lenses for this mount have a leaf shutter. The adapter must hold the shutter open.
- Sony EAdapter · 61 mm
- Canon RFAdapter · 59 mm
- Nikon ZAdapter · 63 mm
- Fujifilm XAdapter · 61.3 mm
- L-MountAdapter · 59 mm
- Micro Four ThirdsAdapter · 59.75 mm
- Fujifilm G (GFX)Adapter · 52.3 mm
- Canon EF-MAdapter · 61 mm
- Canon EFAdapter · 35 mm
A rear element that sticks out can hit the camera mirror.
- Nikon FAdapter · 32.5 mm
A rear element that sticks out can hit the camera mirror.
Other Mounts03
No alternate mounts are indexed for this family yet.