Compare lenses

Sigma 56mm f/1.4 DC DN Contemporary vs Viltrox AF 56mm f/1.7 Air

The Sigma 56mm f/1.4 DC DN Contemporary and the Viltrox AF 56mm f/1.7 Air side by side, computed from this guide's catalogue.

Which to pick

Pick the Sigma 56mm f/1.4 DC DN Contemporary if you want a brighter f/1.4 (0.6 stops more light), for dim light and softer backgrounds and a fit on more cameras (180 against 88 in this guide). Pick the Viltrox AF 56mm f/1.7 Air if you want a lighter lens (171 g against 280 g).

Still torn? Ask the guide about the Sigma 56mm f/1.4 DC DN Contemporary and the Viltrox AF 56mm f/1.7 Air

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 56mm f/1.4 DC DN Contemporary	Viltrox AF 56mm f/1.7 Air
Maker	Sigma	Viltrox
Focal length	56mm (prime)	56mm (prime)
Full-frame equivalent	84mm on APS-C	84mm on APS-C
Maximum aperture	f/1.4brighter	f/1.7
Made for	APS-C	APS-C
Mounts	Sony E, Fujifilm X, Micro Four Thirds, L-Mount, Canon RF, Nikon Z	Sony E, Fujifilm X, Nikon Z
Stabilised	no	no
Autofocus	yes	yes
Weight	280 g	171 glighter
Cameras it fits	180 in this guidefits more cameras	88 in this guide

Focal range, in full-frame terms

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

Viltrox AF 56mm f/1.7 Air: 56mm on APS-C, like 84mm.

Aperture

Sigma 56mm f/1.4 DC DN Contemporary: f/1.4 wide open.

Viltrox AF 56mm f/1.7 Air: f/1.7 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

88 cameras in this guide take both, so either works on the same body. In all, the Sigma 56mm f/1.4 DC DN Contemporary fits 180 and the Viltrox AF 56mm f/1.7 Air 88.