Panasonic Lumix S PRO 50mm f/1.4 vs Leica Summicron-SL 50mm f/2 ASPH
Panasonic Lumix S PRO 50mm f/1.4 has more in its favour on paper. The Lumix S PRO 50mm f/1.4 gathers more light for low light and background blur; the Summicron-SL 50mm f/2 ASPH is lighter and the alternative.
Choose the Lumix S PRO 50mm f/1.4 for
- a brighter maximum aperture (f/1.4, about 1.0 stops more light)
- a lower price (about £760 vs £1,170)
Choose the Summicron-SL 50mm f/2 ASPH for
- less weight (320g vs 955g)
| Lumix S PRO 50mm f/1.4 | Summicron-SL 50mm f/2 ASPH | |
|---|---|---|
| Brand | Panasonic | Leica |
| Focal length | 50mm | 50mm |
| Maximum aperture | f/1.4 | f/2 |
| Weight | 955 g | 320 g |
| Stabilisation | No | No |
| Weather sealing | Yes | Yes |
| Filter size | 77mm | 55mm |
| Made for | Full frame | Full frame |
| New price | £2,199 | £2,400 |
| Used at MPB (L-Mount) | £744–£784 | £1,119–£1,219 |
More lens comparisons
See all L-Mount cameras and lenses.
Frequently asked questions
Is the Panasonic Lumix S PRO 50mm f/1.4 better than the Leica Summicron-SL 50mm f/2 ASPH?
The Lumix S PRO 50mm f/1.4 offers a brighter maximum aperture (f/1.4, about 1.0 stops more light), a lower price (about £760 vs £1,170); the Summicron-SL 50mm f/2 ASPH offers less weight (320g vs 955g).
Which is better value, the Lumix S PRO 50mm f/1.4 or the Summicron-SL 50mm f/2 ASPH?
On L-Mount, the Panasonic Lumix S PRO 50mm f/1.4 costs about £760 against about £1,170 for the Leica Summicron-SL 50mm f/2 ASPH (MPB used where listed, otherwise new; checked 5 November 2026).
Is f/1.4 worth it over f/2?
f/1.4 gathers about 1.0 stops more light, which helps indoors, at night and for background blur. If you mostly shoot in good light, the slower lens is usually lighter and cheaper.
Do both lenses fit the same cameras?
Both are available for L-Mount.