Compare lenses

Sony E 20mm f/2.8 vs Voigtländer APO-Lanthar 28mm f/2 Aspherical

The Sony E 20mm f/2.8 and the Voigtländer APO-Lanthar 28mm f/2 Aspherical side by side, computed from this guide's catalogue.

Which to pick

Pick the Sony E 20mm f/2.8 if you want autofocus; a design for APS-C, which usually means smaller and lighter; and a lighter lens (69 g against 325 g). Pick the Voigtländer APO-Lanthar 28mm f/2 Aspherical if you want a brighter f/2 (1.0 stops more light), for dim light and softer backgrounds; coverage of full frame, so it suits the larger-sensor bodies too; and a fit on more cameras (77 against 41 in this guide).

Still torn? Ask the guide about the Sony E 20mm f/2.8 and the Voigtländer APO-Lanthar 28mm 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 E 20mm f/2.8	Voigtländer APO-Lanthar 28mm f/2 Aspherical
Maker	Sony	Voigtländer
Focal length	20mm (prime)	28mm (prime)
Full-frame equivalent	30mm on APS-C	28mm
Maximum aperture	f/2.8	f/2brighter
Made for	APS-C	Full frame
Mounts	Sony E	Sony E, Nikon Z, Leica M
Stabilised	no	no
Autofocus	yesautofocus	no, manual focus
Weight	69 glighter	325 g
Cameras it fits	41 in this guide	77 in this guidefits more cameras

Focal range, in full-frame terms

Sony E 20mm f/2.8: 20mm on APS-C, like 30mm.

Voigtländer APO-Lanthar 28mm f/2 Aspherical: 28mm.

Aperture

Sony E 20mm f/2.8: f/2.8 wide open.

Voigtländer APO-Lanthar 28mm 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 E 20mm f/2.8 fits 41 and the Voigtländer APO-Lanthar 28mm f/2 Aspherical 77.