Technical Data Files
Leica Summicron-M 28 f/2 ASPH. - Technical Data
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Lens Leica Summicron-M 28 f/2 ASPH.
Order Number 11618
View angle (diagonal/horizontal/vertical)  
Full-frame (24 x 36 mm) 74°/65°/46°
Lens system  
Number of lenses/assemblies 9/6
Number of aspherical surfaces 1
Position of the entrance pupil before the bayonet 12.7 mm
Focus range Live View: 0.4 m to ∞, rangefinder: 0.7 m to ∞
Scale Combined scale meter (m)/foot (ft)
Smallest object field Full-frame: 272 x 408 mm
Largest scale 1:11.3
Setting/Function Click-stop diaphragm with half-increment lock settings
Smallest aperture 16
Number of diaphragm blades 10
Bayonet Leica M bayonet with 6-bit encoding
Filter thread E46
Lens hood Extendable
Length Approx. 55 mm
Diameter Approx. 58 mm
Weight Approx. 275 g