Compare lenses

Panasonic Leica DG 42.5mm f/1.2 vs Sigma 56mm f/1.4 DC DN Contemporary

The Panasonic Leica DG 42.5mm f/1.2 and the Sigma 56mm f/1.4 DC DN Contemporary side by side, computed from this guide's catalogue.

Which to pick

Pick the Panasonic Leica DG 42.5mm f/1.2 if you want a brighter f/1.2 (0.4 stops more light), for dim light and softer backgrounds; optical stabilisation, which helps most on bodies without it; and a design for Micro Four Thirds, which usually means smaller and lighter. Pick the Sigma 56mm f/1.4 DC DN Contemporary if you want coverage of APS-C, so it suits the larger-sensor bodies too; a fit on more cameras (180 against 49 in this guide); and a lighter lens (280 g against 425 g).

Still torn? Ask the guide about the Panasonic Leica DG 42.5mm f/1.2 and the Sigma 56mm f/1.4 DC DN 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	Panasonic Leica DG 42.5mm f/1.2	Sigma 56mm f/1.4 DC DN Contemporary
Maker	Panasonic	Sigma
Focal length	42mm (prime)	56mm (prime)
Full-frame equivalent	85mm on Micro Four Thirds	84mm on APS-C
Maximum aperture	f/1.2brighter	f/1.4
Made for	Micro Four Thirds	APS-C
Mounts	Micro Four Thirds	Sony E, Fujifilm X, Micro Four Thirds, L-Mount, Canon RF, Nikon Z
Stabilised	yesstabilised	no
Autofocus	yes	yes
Weight	425 g	280 glighter
Cameras it fits	49 in this guide	180 in this guidefits more cameras

Focal range, in full-frame terms

Panasonic Leica DG 42.5mm f/1.2: 42mm on Micro Four Thirds, like 85mm.

Sigma 56mm f/1.4 DC DN Contemporary: 56mm on APS-C, like 84mm.

Aperture

Panasonic Leica DG 42.5mm f/1.2: f/1.2 wide open.

Sigma 56mm f/1.4 DC DN Contemporary: f/1.4 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

49 cameras in this guide take both, so either works on the same body. In all, the Panasonic Leica DG 42.5mm f/1.2 fits 49 and the Sigma 56mm f/1.4 DC DN Contemporary 180.