Compare lenses

Leica Summilux-SL 50mm f/1.4 ASPH vs Sigma 50mm f/1.2 DG DN Art

The Leica Summilux-SL 50mm f/1.4 ASPH and the Sigma 50mm f/1.2 DG DN Art side by side, computed from this guide's catalogue.

Which to pick

Pick the Sigma 50mm f/1.2 DG DN Art if you want a brighter f/1.2 (0.4 stops more light), for dim light and softer backgrounds; a fit on more cameras (66 against 25 in this guide); and a lighter lens (740 g against 1065 g). On these specs the Leica Summilux-SL 50mm f/1.4 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 Summilux-SL 50mm f/1.4 ASPH and the Sigma 50mm f/1.2 DG DN Art

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 Summilux-SL 50mm f/1.4 ASPH	Sigma 50mm f/1.2 DG DN Art
Maker	Leica	Sigma
Focal length	50mm (prime)	50mm (prime)
Full-frame equivalent	50mm	50mm
Maximum aperture	f/1.4	f/1.2brighter
Made for	Full frame	Full frame
Mounts	L-Mount	Sony E, L-Mount
Stabilised	no	no
Autofocus	yes	yes
Weight	1065 g	740 glighter
Cameras it fits	25 in this guide	66 in this guidefits more cameras

Focal range, in full-frame terms

Leica Summilux-SL 50mm f/1.4 ASPH: 50mm.

Sigma 50mm f/1.2 DG DN Art: 50mm.

Aperture

Leica Summilux-SL 50mm f/1.4 ASPH: f/1.4 wide open.

Sigma 50mm f/1.2 DG DN Art: f/1.2 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 Summilux-SL 50mm f/1.4 ASPH fits 25 and the Sigma 50mm f/1.2 DG DN Art 66.