Order nos. – 11215-Leicaflex – 11216-R.only – 11345-ROM – 11217-R.only.Safari LLC – 123
Production era 1976-2009, 99,736+ lenses
Lens mount – LEICA R-bayonet for LEICA R3 to LEICA R9 with mechanical, and, for LEICA R8/R9, additional electronic exposure control
Variants – Black, Safari green, R-only and 3-cam versions
Number of lenses/groups – 6 / 4
Focusing range – 0.5 m / 19.7 in < ∞
Aperture range – f/2-f/16 – Preset diaphragm with clickstops (including half values), 6-blade fully automatic diaphragm
Smallest object field/Largest reproduction ratio – 180 mm x 270 mm / 1:7.5
Angle of view (diagonal, horizontal, vertical) – 47°, 40°, 27°
Position of entrance pupil – 20.2 mm / 0.8 in (related to the first lens surface in light direction)
Scales – Combined meter/feet graduation
Filter mount/Lens hood – Internal thread for screw-in type filters E 55 / Built-in, telescopic
Accessories – ELPRO close focusing attachments type 1 and 2
Viewfinder – Camera viewfinder
Materials – Anodized aluminum and optical glass
Focal length – 52.5 mm / 2.07 in
Length to bayonet flange – 41 mm / 1.6 in
Largest diameter – 66 mm / 2.6 in
Weight – 290 g / 10.2 oz
Inscriptions – LEICA SUMMICRON-R 1:2/50 E 55 3XXXXXX
LEITZ SUMMICRON-R 1:2/50 3XXXXXX
SUMMICRON-R 1:2/50 LEITZ CANADA 3XXXXXX