Compare lenses

Leica Summicron-SL 50mm f/2 ASPH vs Sigma 50mm f/2 DG Contemporary

The Leica Summicron-SL 50mm f/2 ASPH and the Sigma 50mm f/2 DG Contemporary side by side, computed from this guide's catalogue.

Which to pick

Pick the Sigma 50mm f/2 DG Contemporary if you want a fit on more cameras (66 against 25 in this guide). 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 Sigma 50mm f/2 DG Contemporary

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	Sigma 50mm f/2 DG Contemporary
Maker	Leica	Sigma
Focal length	50mm (prime)	50mm (prime)
Full-frame equivalent	50mm	50mm
Maximum aperture	f/2	f/2
Made for	Full frame	Full frame
Mounts	L-Mount	Sony E, L-Mount
Stabilised	no	no
Autofocus	yes	yes
Weight	not listed	345 g
Cameras it fits	25 in this guide	66 in this guidefits more cameras

Focal range, in full-frame terms

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

Sigma 50mm f/2 DG Contemporary: 50mm.

Aperture

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

Sigma 50mm f/2 DG Contemporary: f/2 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. In all, the Leica Summicron-SL 50mm f/2 ASPH fits 25 and the Sigma 50mm f/2 DG Contemporary 66.