Compare lenses

Canon EF 135mm f/2L USM vs Sigma 135mm f/1.8 DG HSM Art

The Canon EF 135mm f/2L USM and the Sigma 135mm f/1.8 DG HSM Art side by side, computed from this guide's catalogue.

Which to pick

Pick the Sigma 135mm f/1.8 DG HSM Art if you want a brighter f/1.8 (0.3 stops more light), for dim light and softer backgrounds and a fit on more cameras (105 against 22 in this guide). On these specs the Canon EF 135mm f/2L USM has no clear advantage: choose it if the price, the handling or a lens you own decides it.

Still torn? Ask the guide about the Canon EF 135mm f/2L USM and the Sigma 135mm f/1.8 DG HSM Art

Specs side by side

Rows that differ are in full colour; the better value is marked where one is better by any measure.
Spec	Canon EF 135mm f/2L USM	Sigma 135mm f/1.8 DG HSM Art
Maker	Canon	Sigma
Focal length	135mm (prime)	135mm (prime)
Full-frame equivalent	135mm	135mm
Maximum aperture	f/2	f/1.8brighter
Made for	Full frame	Full frame
Mounts	Canon EF	Canon EF, Nikon F, Sony E, L-Mount
Stabilised	no	no
Autofocus	yes	yes
Weight	750 g	not listed
Cameras it fits	22 in this guide	105 in this guidefits more cameras

Focal range, in full-frame terms

Canon EF 135mm f/2L USM: 135mm.

Sigma 135mm f/1.8 DG HSM Art: 135mm.

Aperture

Canon EF 135mm f/2L USM: f/2 wide open.

Sigma 135mm f/1.8 DG HSM Art: 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

22 cameras in this guide take both, so either works on the same body. In all, the Canon EF 135mm f/2L USM fits 22 and the Sigma 135mm f/1.8 DG HSM Art 105.