Panasonic Lumix S 50mm f/1.8 vs Leica Summicron-SL 50mm f/2 ASPH
Panasonic Lumix S 50mm f/1.8 has more in its favour on paper. The Lumix S 50mm f/1.8 gathers more light for low light and background blur; the Summicron-SL 50mm f/2 ASPH is the alternative.
Choose the Lumix S 50mm f/1.8 for
- a brighter maximum aperture (f/1.8, about 0.3 stops more light)
- less weight (300g vs 320g)
- a lower price (about £210 vs £1,170)
Choose the Summicron-SL 50mm f/2 ASPH for
- Similar specs
| Lumix S 50mm f/1.8 | Summicron-SL 50mm f/2 ASPH | |
|---|---|---|
| Brand | Panasonic | Leica |
| Focal length | 50mm | 50mm |
| Maximum aperture | f/1.8 | f/2 |
| Weight | 300 g | 320 g |
| Stabilisation | No | No |
| Weather sealing | Yes | Yes |
| Filter size | 67mm | 55mm |
| Made for | Full frame | Full frame |
| New price | £449 | £2,400 |
| Used at MPB (L-Mount) | £199–£229 | £1,119–£1,219 |
More lens comparisons
See all L-Mount cameras and lenses.
Frequently asked questions
Is the Panasonic Lumix S 50mm f/1.8 better than the Leica Summicron-SL 50mm f/2 ASPH?
The Lumix S 50mm f/1.8 offers a brighter maximum aperture (f/1.8, about 0.3 stops more light), less weight (300g vs 320g), a lower price (about £210 vs £1,170); the Summicron-SL 50mm f/2 ASPH offers similar specs.
Which is better value, the Lumix S 50mm f/1.8 or the Summicron-SL 50mm f/2 ASPH?
On L-Mount, the Panasonic Lumix S 50mm f/1.8 costs about £210 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/1.8 worth it over f/2?
f/1.8 gathers about 0.3 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.