N°100740 · Family detail
Carl ZeissWide·LEICA M mount·2004
Carl Zeiss Biogon T* 25mm F/2.8 ZM
Specifications01
MountLEICA M
Focal length25mm
Max aperturef/2.8
TypeWide · Prime
Release year2004
Weight260 g
Filter size46 mm
Min focus distance0.5 m
Max magnification0.0556
Aperture blades10
Optical elements9
Groups7
AutofocusNo
StabilizationNo
Aperture controlAperture ring
Lens hood1365-665 - Bayonet-type rectangular
1365-666 - Bayonet-type round vented
EraFilm era
Additional Info02
Lens TypeWide-angle prime lens
Summary02
Carl Zeiss Biogon T* 25mm f/2.8 is a Leica M-mount 25mm prime lens intended for general wide-angle use. It has a maximum aperture of f/2.8 for normal low-light capability.
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The Leica M mount has a flange distance of 27.8 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- Some wide-angle M lenses show colour shifts or soft corners on digital sensors.
- Sony EAdapter · 9.8 mm
- Canon RFAdapter · 7.8 mm
- Nikon ZAdapter · 11.8 mm
- Fujifilm XAdapter · 10.1 mm
- L-MountAdapter · 7.8 mm
- Micro Four ThirdsAdapter · 8.55 mm
- Canon EF-MAdapter · 9.8 mm
No plain adapter reaches infinity focus on: Fujifilm G (GFX), Canon EF, Nikon F.

Other Mounts03
No alternate mounts are indexed for this family yet.