Compare lenses

Canon RF-S 7.8mm f/4 STM Dual vs Laowa 11mm f/4.5 FF RL

The Canon RF-S 7.8mm f/4 STM Dual and the Laowa 11mm f/4.5 FF RL side by side, computed from this guide's catalogue.

Which to pick

Pick the Canon RF-S 7.8mm f/4 STM Dual if you want a brighter f/4 (0.3 stops more light), for dim light and softer backgrounds; autofocus; a design for APS-C, which usually means smaller and lighter; and a lighter lens (130 g against 254 g). Pick the Laowa 11mm f/4.5 FF RL if you want coverage of full frame, so it suits the larger-sensor bodies too and a fit on more cameras (120 against 18 in this guide).

Still torn? Ask the guide about the Canon RF-S 7.8mm f/4 STM Dual and the Laowa 11mm f/4.5 FF RL

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-S 7.8mm f/4 STM Dual	Laowa 11mm f/4.5 FF RL
Maker	Canon	Laowa
Focal length	7.8mm (prime)	11mm (prime)
Full-frame equivalent	12mm on APS-C	11mm
Maximum aperture	f/4brighter	f/4.5
Made for	APS-C	Full frame
Mounts	Canon RF	Sony E, Nikon Z, Canon RF, L-Mount, Leica M
Stabilised	no	no
Autofocus	yesautofocus	no, manual focus
Weight	130 glighter	254 g
Cameras it fits	18 in this guide	120 in this guidefits more cameras

Focal range, in full-frame terms

Canon RF-S 7.8mm f/4 STM Dual: 7.8mm on APS-C, like 12mm.

Laowa 11mm f/4.5 FF RL: 11mm.

Aperture

Canon RF-S 7.8mm f/4 STM Dual: f/4 wide open.

Laowa 11mm f/4.5 FF RL: f/4.5 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-S 7.8mm f/4 STM Dual fits 18 and the Laowa 11mm f/4.5 FF RL 120.