Compare lenses

Sony FE 40mm f/2.5 G vs Voigtländer Septon 40mm f/2 Aspherical

The Sony FE 40mm f/2.5 G and the Voigtländer Septon 40mm f/2 Aspherical side by side, computed from this guide's catalogue.

Which to pick

Pick the Sony FE 40mm f/2.5 G if you want autofocus. Pick the Voigtländer Septon 40mm f/2 Aspherical if you want a brighter f/2 (0.6 stops more light), for dim light and softer backgrounds and a fit on more cameras (57 against 41 in this guide).

Still torn? Ask the guide about the Sony FE 40mm f/2.5 G and the Voigtländer Septon 40mm f/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	Sony FE 40mm f/2.5 G	Voigtländer Septon 40mm f/2 Aspherical
Maker	Sony	Voigtländer
Focal length	40mm (prime)	40mm (prime)
Full-frame equivalent	40mm	40mm
Maximum aperture	f/2.5	f/2brighter
Made for	Full frame	Full frame
Mounts	Sony E	Sony E, Nikon Z
Stabilised	no	no
Autofocus	yesautofocus	no, manual focus
Weight	173 g	165 g
Cameras it fits	41 in this guide	57 in this guidefits more cameras

Focal range, in full-frame terms

Sony FE 40mm f/2.5 G: 40mm.

Voigtländer Septon 40mm f/2 Aspherical: 40mm.

Aperture

Sony FE 40mm f/2.5 G: f/2.5 wide open.

Voigtländer Septon 40mm f/2 Aspherical: 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

41 cameras in this guide take both, so either works on the same body. In all, the Sony FE 40mm f/2.5 G fits 41 and the Voigtländer Septon 40mm f/2 Aspherical 57.