| Lens | Leica APO-Summicron-M 50 f/2 ASPH. |
| Order number | 11141 |
| View angle (diagonal/horizontal/vertical) Full-frame (24 x 36 mm) |
47°/40°/27° |
| Lens system | |
| Number of lenses/assemblies | 8/5 |
| Number of aspherical surfaces | 1 |
| Position of the entrance pupil before the bayonet | 24.4 mm |
| Focus range | 0.7 m to ∞ |
| Focusing | |
| Scale | Combined scale meter (m)/foot (ft) |
| Smallest object field | Full-frame: 271 x 407 mm |
| Largest scale | 1:17,4 |
| Diaphragm | |
| Setting/Function | Click-stop diaphragm with half-increment lock settings |
| Smallest aperture | 16 |
| Number of diaphragm blades | 11 |
| Bayonet | Leica M bayonet with 6-bit encoding |
| Filter (type) | E39 |
| Lens hood | Separate, screw-on |
| Dimensions | |
| Length | Approx. 47 mm |
| Diameter | Ca. 53 mm |
| Weight | Approx. 300 g |
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