Compare lenses

Sigma 20mm f/1.4 DG HSM Art vs Sigma 20mm f/2 DG Contemporary

The Sigma 20mm f/1.4 DG HSM Art and the Sigma 20mm f/2 DG Contemporary side by side, computed from this guide's catalogue.

Which to pick

Pick the Sigma 20mm f/1.4 DG HSM Art if you want a brighter f/1.4 (1.0 stops more light), for dim light and softer backgrounds and a fit on more cameras (105 against 66 in this guide). On these specs the Sigma 20mm 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 20mm f/1.4 DG HSM Art and the Sigma 20mm 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	Sigma 20mm f/1.4 DG HSM Art	Sigma 20mm f/2 DG Contemporary
Maker	Sigma	Sigma
Focal length	20mm (prime)	20mm (prime)
Full-frame equivalent	20mm	20mm
Maximum aperture	f/1.4brighter	f/2
Made for	Full frame	Full frame
Mounts	Canon EF, Nikon F, Sony E, L-Mount	Sony E, L-Mount
Stabilised	no	no
Autofocus	yes	yes
Weight	not listed	370 g
Cameras it fits	105 in this guidefits more cameras	66 in this guide

Focal range, in full-frame terms

Sigma 20mm f/1.4 DG HSM Art: 20mm.

Sigma 20mm f/2 DG Contemporary: 20mm.

Aperture

Sigma 20mm f/1.4 DG HSM Art: f/1.4 wide open.

Sigma 20mm 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

66 cameras in this guide take both, so either works on the same body. In all, the Sigma 20mm f/1.4 DG HSM Art fits 105 and the Sigma 20mm f/2 DG Contemporary 66.