Leica Summicron-M 50mm f/2
Leica Summicron-M 50mm f/2 is the reference Leica M normal lens — the lens by which other 50mm rangefinder lenses are measured. Five major optical generations span 1953 to present: v1 (1953), v2 (1969), v3 (1979), v4 "Type 3" (1994), v5 "Type 4" (2008). Each generation is highly regarded; v5 is the current production version.
Key features
- Leica M bayonet mount — bright-line 50mm framelines on all M bodies
- 6-element/4-group double-Gauss formula (most generations); v4 onward is 6-element/5-group
- 39mm filter thread (most generations)
- Manual aperture + manual focus
- Built-in retractable lens hood (v3 onward; v1/v2 use clip-on or accessory hoods)
Use case + rendering
The Summicron 50 is the universal Leica M normal lens — the lens nearly every M-system buyer eventually owns. Wide-open at f/2 it is sharp by Leica standards (for older Summicrons) or exceptional (for v4/v5); at f/4-f/8 it is extraordinary across the field on any generation.
The "Leica look" — clean separation of in-focus from out-of-focus, neutral color, smooth tonal gradation — is most consistently visible on this lens. Compares against the Zeiss ZM Planar 50/2 (slightly different rendering signature) and the Voigtlander Nokton 50/1.5 (faster, different character) as the two main third-party alternatives in the M-mount range.
Compatible bodies
- Leica M6 / Leica M6 TTL
- Leica M4
- Leica M3 — the M3's 50mm-optimized viewfinder pairs especially well
- All later Leica M and digital M bodies
Related lenses
- Leica Summilux-M 35mm f/1.4 — fast wide-normal
- Leica Elmarit-M 90mm f/2.8 — short tele
- Voigtlander Nokton 50mm f/1.5 — third-party fast 50