Compare lenses

Leica Summicron-SL 50mm f/2 ASPH vs Panasonic Lumix S 50mm f/1.8

The Leica Summicron-SL 50mm f/2 ASPH and the Panasonic Lumix S 50mm f/1.8 side by side, computed from this guide's catalogue.

Which to pick

Pick the Panasonic Lumix S 50mm f/1.8 if you want a brighter f/1.8 (0.3 stops more light), for dim light and softer backgrounds. On these specs the Leica Summicron-SL 50mm f/2 ASPH has no clear advantage: choose it if the price, the handling or a lens you own decides it.

Still torn? Ask the guide about the Leica Summicron-SL 50mm f/2 ASPH and the Panasonic Lumix S 50mm f/1.8

Specs side by side

Rows that differ are in full colour; the better value is marked where one is better by any measure.
Spec	Leica Summicron-SL 50mm f/2 ASPH	Panasonic Lumix S 50mm f/1.8
Maker	Leica	Panasonic
Focal length	50mm (prime)	50mm (prime)
Full-frame equivalent	50mm	50mm
Maximum aperture	f/2	f/1.8brighter
Made for	Full frame	Full frame
Mounts	L-Mount	L-Mount
Stabilised	no	no
Autofocus	yes	yes
Weight	not listed	300 g
Cameras it fits	25 in this guide	25 in this guide

Focal range, in full-frame terms

Leica Summicron-SL 50mm f/2 ASPH: 50mm.

Panasonic Lumix S 50mm f/1.8: 50mm.

Aperture

Leica Summicron-SL 50mm f/2 ASPH: f/2 wide open.

Panasonic Lumix S 50mm f/1.8: f/1.8 wide open.

Each opening drawn to scale against f/1.4: a smaller f-number lets in more light and blurs the background more.

Field of view

How wide each sees, at each end, on the sensor it was made for.

Cameras they fit

25 cameras in this guide take both, so either works on the same body.