Lens Leica Tri-Elmar-M 16-18-21 mm f/4 ASPH.
Order number 11642
View angle (diagonal/horizontal/vertical)
Full-frame (24 × 36 mm)		 16mm: 107°/97°/74°  
18mm: 100°/90°/67°  
21mm: 92°/81°/60°
   
Lens system  
Number of lenses/assemblies 10/7
Number of aspherical surfaces 2
Focus range 0.5 m to ∞
Focusing  
Scale Combined scale meter (m)/foot (ft)
Smallest object field 16mm: 915 x 1373 mm
18 mm: 833 x 1250 mm
21 mm: 725 x 1087 mm
Largest scale 16 mm: 1:38
18 mm: 1:35
21 mm: 1:30
Diaphragm  
Setting/Function Click-stop diaphragm with half-increment lock settings
Smallest aperture 22
Bayonet Leica M bayonet with 6-bit encoding
Filter thread E67
Lens hood screw-on
Dimensions  
Length Approx. 66 mm
Diameter Approx. 54 mm
Weight Approx. 335 g

Dane techniczne

Tri-Elmar-M 16-18-21 mm f/4 ASPH. - Technical data
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