Compare lenses

Sigma 50mm f/2 DG Contemporary vs Yongnuo YN50mm f/1.8 DF DSM

The Sigma 50mm f/2 DG Contemporary and the Yongnuo YN50mm f/1.8 DF DSM side by side, computed from this guide's catalogue.

Which to pick

Pick the Yongnuo YN50mm f/1.8 DF DSM if you want a brighter f/1.8 (0.3 stops more light), for dim light and softer backgrounds. On these specs the Sigma 50mm f/2 DG Contemporary 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 Sigma 50mm f/2 DG Contemporary and the Yongnuo YN50mm f/1.8 DF DSM

Specs side by side

Rows that differ are in full colour; the better value is marked where one is better by any measure.
Spec	Sigma 50mm f/2 DG Contemporary	Yongnuo YN50mm f/1.8 DF DSM
Maker	Sigma	Yongnuo
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	Sony E, L-Mount	Sony E, Nikon Z
Stabilised	no	no
Autofocus	yes	yes
Weight	345 g	not listed
Cameras it fits	66 in this guide	57 in this guide

Focal range, in full-frame terms

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

Yongnuo YN50mm f/1.8 DF DSM: 50mm.

Aperture

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

Yongnuo YN50mm f/1.8 DF DSM: 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

41 cameras in this guide take both, so either works on the same body. In all, the Sigma 50mm f/2 DG Contemporary fits 66 and the Yongnuo YN50mm f/1.8 DF DSM 57.