Specifications
- Mount
- Leica M
- Focal length
- 16–21mm
- Maximum aperture
- f/4
- Minimum aperture
- f/22
- Construction
- 10 elements in 7 groups
- Closest focus
- 0.5 m
- Filter
- 67mm
- Diameter × length
- 54 × 62 mm
- Weight
- 335 g
- Focus
- Manual
Three focal lengths: 16, 18 and 21mm. E67 filters via the optional filter holder
Source: Leica technical data sheet: Tri-Elmar-M 16-18-21mm f/4 ASPH. (archived by 125px) (manufacturer document)
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