Compare lenses

Sigma 15mm f/1.4 DC Contemporary vs Viltrox AF 15mm f/1.7 Air

The Sigma 15mm f/1.4 DC Contemporary and the Viltrox AF 15mm f/1.7 Air side by side, computed from this guide's catalogue.

Which to pick

Pick the Sigma 15mm f/1.4 DC Contemporary if you want a brighter f/1.4 (0.6 stops more light), for dim light and softer backgrounds. Pick the Viltrox AF 15mm f/1.7 Air if you want a lighter lens (180 g against 220 g).

Still torn? Ask the guide about the Sigma 15mm f/1.4 DC Contemporary and the Viltrox AF 15mm 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 15mm f/1.4 DC Contemporary	Viltrox AF 15mm f/1.7 Air
Maker	Sigma	Viltrox
Focal length	15mm (prime)	15mm (prime)
Full-frame equivalent	22mm on APS-C	22mm on APS-C
Maximum aperture	f/1.4brighter	f/1.7
Made for	APS-C	APS-C
Mounts	Sony E, Fujifilm X, Canon RF	Sony E, Fujifilm X, Nikon Z
Stabilised	no	no
Autofocus	yes	yes
Weight	220 g	180 glighter
Cameras it fits	90 in this guide	88 in this guide

Focal range, in full-frame terms

Sigma 15mm f/1.4 DC Contemporary: 15mm on APS-C, like 22mm.

Viltrox AF 15mm f/1.7 Air: 15mm on APS-C, like 22mm.

Aperture

Sigma 15mm f/1.4 DC Contemporary: f/1.4 wide open.

Viltrox AF 15mm 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

72 cameras in this guide take both, so either works on the same body. In all, the Sigma 15mm f/1.4 DC Contemporary fits 90 and the Viltrox AF 15mm f/1.7 Air 88.