Leica Summarit-M 50 mm f/2.5 specs

Angle of view (diagonal, horizontal, vertical) - For 35 mm (24 x 36 mm) : 47°, 40°, 27°, for LEICA M8 (18 x 27 mm) : 36°, 30°, 20°, corresponds to a focal length of approx. 67 mm with 35 mm-format

Optical design:
Number of lenses/groups: 6/4
Focus length: 50.1 mm
Position of entrance pupil: 28.0 mm (related to the first lens surface in light direction)

Distance setting:
Focusing range: 0.8 m to endless
Scales: Combined meter/feet graduation

Smallest object field / Largest reproduction ratio:
For 35 mm, approx. 338 x 508 mm/1:14.1
for LEICA M8, approx. 254 x 380 mm/1:14.1

Aperture:
Setting/Function: Preset, with click-stops, half values available
Lowest value: 16

Bayonet - Leica M quick-change bayonet with 6 bit lens identification bar code for digital M models

Filter mount/Lens hood - Non-rotating, internal thread for screw-on filters size E39, external thread with stop for lens hood, protection ring for external thread included in delivery, lens hood available as accessory.

Dimensions and weight:
Length: approx. 33.0 mm
Largest diameter: approx. 51.5 mm
Weight: approx. 230 g