Compare lenses

Sigma 15mm f/1.4 DG DN Diagonal Fisheye Art vs Sony FE 14mm f/1.8 GM

The Sigma 15mm f/1.4 DG DN Diagonal Fisheye Art and the Sony FE 14mm f/1.8 GM side by side, computed from this guide's catalogue.

Which to pick

Pick the Sigma 15mm f/1.4 DG DN Diagonal Fisheye Art if you want a brighter f/1.4 (0.7 stops more light), for dim light and softer backgrounds and a fit on more cameras (66 against 41 in this guide). Pick the Sony FE 14mm f/1.8 GM if you want a lighter lens (460 g against 1360 g).

Still torn? Ask the guide about the Sigma 15mm f/1.4 DG DN Diagonal Fisheye Art and the Sony FE 14mm f/1.8 GM

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 DG DN Diagonal Fisheye Art	Sony FE 14mm f/1.8 GM
Maker	Sigma	Sony
Focal length	15mm (prime)	14mm (prime)
Full-frame equivalent	15mm	14mm
Maximum aperture	f/1.4brighter	f/1.8
Made for	Full frame	Full frame
Mounts	Sony E, L-Mount	Sony E
Stabilised	no	no
Autofocus	yes	yes
Weight	1360 g	460 glighter
Cameras it fits	66 in this guidefits more cameras	41 in this guide

Focal range, in full-frame terms

Sigma 15mm f/1.4 DG DN Diagonal Fisheye Art: 15mm.

Sony FE 14mm f/1.8 GM: 14mm.

Aperture

Sigma 15mm f/1.4 DG DN Diagonal Fisheye Art: f/1.4 wide open.

Sony FE 14mm f/1.8 GM: 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 15mm f/1.4 DG DN Diagonal Fisheye Art fits 66 and the Sony FE 14mm f/1.8 GM 41.