Leica Summilux-SL 50mm f/1.4 ASPH vs Leica APO-Summicron-SL 50mm f/2 ASPH
Leica Summilux-SL 50mm f/1.4 ASPH has more in its favour on paper. The Summilux-SL 50mm f/1.4 ASPH gathers more light for low light and background blur; the APO-Summicron-SL 50mm f/2 ASPH is lighter and the alternative.
Choose the Summilux-SL 50mm f/1.4 ASPH for
- a brighter maximum aperture (f/1.4, about 1.0 stops more light)
- a lower price (about £1,950 vs £2,500)
Choose the APO-Summicron-SL 50mm f/2 ASPH for
- less weight (740g vs 1065g)
| Summilux-SL 50mm f/1.4 ASPH | APO-Summicron-SL 50mm f/2 ASPH | |
|---|---|---|
| Brand | Leica | Leica |
| Focal length | 50mm | 50mm |
| Maximum aperture | f/1.4 | f/2 |
| Weight | 1065 g | 740 g |
| Stabilisation | No | No |
| Weather sealing | Yes | Yes |
| Filter size | 82mm | 67mm |
| Made for | Full frame | Full frame |
| New price | £4,800 | £4,500 |
| Used at MPB (L-Mount) | £1,899–£2,009 | £2,479–£2,519 |
More lens comparisons
See all L-Mount cameras and lenses.
Frequently asked questions
Is the Leica Summilux-SL 50mm f/1.4 ASPH better than the Leica APO-Summicron-SL 50mm f/2 ASPH?
The Summilux-SL 50mm f/1.4 ASPH offers a brighter maximum aperture (f/1.4, about 1.0 stops more light), a lower price (about £1,950 vs £2,500); the APO-Summicron-SL 50mm f/2 ASPH offers less weight (740g vs 1065g).
Which is better value, the Summilux-SL 50mm f/1.4 ASPH or the APO-Summicron-SL 50mm f/2 ASPH?
On L-Mount, the Leica Summilux-SL 50mm f/1.4 ASPH costs about £1,950 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.