Compare lenses

Canon RF 16mm f/2.8 STM vs TTArtisan 10mm f/2 ASPH

The Canon RF 16mm f/2.8 STM and the TTArtisan 10mm f/2 ASPH side by side, computed from this guide's catalogue.

Which to pick

Pick the Canon RF 16mm f/2.8 STM if you want autofocus and coverage of full frame, so it suits the larger-sensor bodies too. Pick the TTArtisan 10mm f/2 ASPH if you want a brighter f/2 (1.0 stops more light), for dim light and softer backgrounds; a design for APS-C, which usually means smaller and lighter; and a fit on more cameras (155 against 18 in this guide).

Still torn? Ask the guide about the Canon RF 16mm f/2.8 STM and the TTArtisan 10mm f/2 ASPH

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 16mm f/2.8 STM	TTArtisan 10mm f/2 ASPH
Maker	Canon	TTArtisan
Focal length	16mm (prime)	10mm (prime)
Full-frame equivalent	16mm	15mm on APS-C
Maximum aperture	f/2.8	f/2brighter
Made for	Full frame	APS-C
Mounts	Canon RF	Sony E, Fujifilm X, Nikon Z, Canon RF, Micro Four Thirds
Stabilised	no	no
Autofocus	yesautofocus	no, manual focus
Weight	165 g	not listed
Cameras it fits	18 in this guide	155 in this guidefits more cameras

Focal range, in full-frame terms

Canon RF 16mm f/2.8 STM: 16mm.

TTArtisan 10mm f/2 ASPH: 10mm on APS-C, like 15mm.

Aperture

Canon RF 16mm f/2.8 STM: f/2.8 wide open.

TTArtisan 10mm f/2 ASPH: 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

18 cameras in this guide take both, so either works on the same body. In all, the Canon RF 16mm f/2.8 STM fits 18 and the TTArtisan 10mm f/2 ASPH 155.