Compare lenses

Canon RF 15-35mm f/2.8L IS USM vs Tamron 11-20mm f/2.8 Di III-A RXD

The Canon RF 15-35mm f/2.8L IS USM and the Tamron 11-20mm f/2.8 Di III-A RXD side by side, computed from this guide's catalogue.

Which to pick

Pick the Canon RF 15-35mm f/2.8L IS USM if you want optical stabilisation, which helps most on bodies without it; more reach (to 35mm equivalent); and coverage of full frame, so it suits the larger-sensor bodies too. Pick the Tamron 11-20mm f/2.8 Di III-A RXD if you want a design for APS-C, which usually means smaller and lighter; a fit on more cameras (90 against 18 in this guide); and a lighter lens (335 g against 840 g).

Still torn? Ask the guide about the Canon RF 15-35mm f/2.8L IS USM and the Tamron 11-20mm f/2.8 Di III-A RXD

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 RF 15-35mm f/2.8L IS USM	Tamron 11-20mm f/2.8 Di III-A RXD
Maker	Canon	Tamron
Focal length	15-35mm (zoom)	11-20mm (zoom)
Full-frame equivalent	15-35mm	16-30mm on APS-C
Maximum aperture	f/2.8	f/2.8
Made for	Full frame	APS-C
Mounts	Canon RF	Sony E, Fujifilm X, Canon RF
Stabilised	yesstabilised	no
Autofocus	yes	yes
Zoom range	2.3×more range	1.8×
Weight	840 g	335 glighter
Cameras it fits	18 in this guide	90 in this guidefits more cameras

Focal range, in full-frame terms

Canon RF 15-35mm f/2.8L IS USM: 15-35mm.

Tamron 11-20mm f/2.8 Di III-A RXD: 11-20mm on APS-C, like 16-30mm.

Aperture

Canon RF 15-35mm f/2.8L IS USM: f/2.8 wide open.

Tamron 11-20mm f/2.8 Di III-A RXD: f/2.8 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

18 cameras in this guide take both, so either works on the same body. In all, the Canon RF 15-35mm f/2.8L IS USM fits 18 and the Tamron 11-20mm f/2.8 Di III-A RXD 90.