Compare lenses

Sigma 40mm f/1.4 DG HSM Art vs Voigtländer Nokton 40mm f/1.2 Aspherical

The Sigma 40mm f/1.4 DG HSM Art and the Voigtländer Nokton 40mm f/1.2 Aspherical side by side, computed from this guide's catalogue.

Which to pick

Pick the Sigma 40mm f/1.4 DG HSM Art if you want autofocus. Pick the Voigtländer Nokton 40mm f/1.2 Aspherical if you want a brighter f/1.2 (0.4 stops more light), for dim light and softer backgrounds.

Still torn? Ask the guide about the Sigma 40mm f/1.4 DG HSM Art and the Voigtländer Nokton 40mm f/1.2 Aspherical

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 40mm f/1.4 DG HSM Art	Voigtländer Nokton 40mm f/1.2 Aspherical
Maker	Sigma	Voigtländer
Focal length	40mm (prime)	40mm (prime)
Full-frame equivalent	40mm	40mm
Maximum aperture	f/1.4	f/1.2brighter
Made for	Full frame	Full frame
Mounts	Canon EF, Nikon F, Sony E, L-Mount	Sony E, Nikon Z, Canon RF, Leica M
Stabilised	no	no
Autofocus	yesautofocus	no, manual focus
Weight	not listed	420 g
Cameras it fits	105 in this guide	95 in this guide

Focal range, in full-frame terms

Sigma 40mm f/1.4 DG HSM Art: 40mm.

Voigtländer Nokton 40mm f/1.2 Aspherical: 40mm.

Aperture

Sigma 40mm f/1.4 DG HSM Art: f/1.4 wide open.

Voigtländer Nokton 40mm f/1.2 Aspherical: f/1.2 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

41 cameras in this guide take both, so either works on the same body. In all, the Sigma 40mm f/1.4 DG HSM Art fits 105 and the Voigtländer Nokton 40mm f/1.2 Aspherical 95.