N°421218 · Family detail
LeicaWide·LEICA M mount·2006
Leica Tri-Elmar-M ASPH 16-18-21mm F/4
Specifications01
MountLEICA M
Focal length16-21mm
Max aperturef/4
TypeWide · Zoom
Release year2006
Weight335 g
Filter size67 mm
Physical length61 mm
Min focus distance0.5 m
Max magnification0.0333
Aperture blades9
Optical elements10
Groups7
Min aperturef/22
AutofocusNo
StabilizationNo
Aperture controlAperture ring
Lens hoodScrew-type 12458 (rectangular)
EraFilm era
Additional Info02
ModelTri-Elmar ASPH
FormatFull Frame
SeriesM
Squeezenone
Lens TypeWide-angle zoom lens
Iris DriveManual
Focus DriveManual
Release Date2006-
Data Protocolnone
Country Of OriginGermany
Summary02
Leica M Tri-Elmar ASPH is a wide-angle zoom for Leica M rangefinder cameras, covering 16–21mm at a constant f/4. Intended for wide scenes such as landscapes and architecture.
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.