Leica APO-Summicron-SL 50mm f/2 ASPH vs Panasonic Lumix S PRO 50mm f/1.4
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 APO-Summicron-SL 50mm f/2 ASPH is lighter and the alternative.
Choose the APO-Summicron-SL 50mm f/2 ASPH for
- less weight (740g vs 955g)
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 £2,500)
| APO-Summicron-SL 50mm f/2 ASPH | Lumix S PRO 50mm f/1.4 | |
|---|---|---|
| Brand | Leica | Panasonic |
| Focal length | 50mm | 50mm |
| Maximum aperture | f/2 | f/1.4 |
| Weight | 740 g | 955 g |
| Stabilisation | No | No |
| Weather sealing | Yes | Yes |
| Filter size | 67mm | 77mm |
| Made for | Full frame | Full frame |
| New price | £4,500 | £2,199 |
| Used at MPB (L-Mount) | £2,479–£2,519 | £744–£784 |
More lens comparisons
See all L-Mount cameras and lenses.
Frequently asked questions
Is the Leica APO-Summicron-SL 50mm f/2 ASPH better than the Panasonic Lumix S PRO 50mm f/1.4?
The APO-Summicron-SL 50mm f/2 ASPH offers less weight (740g vs 955g); 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 £2,500).
Which is better value, the APO-Summicron-SL 50mm f/2 ASPH or the Lumix S PRO 50mm f/1.4?
On L-Mount, the Panasonic Lumix S PRO 50mm f/1.4 costs about £760 against about £2,500 for the Leica APO-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.