Compare lenses

TTArtisan 23mm f/1.4 vs Yongnuo YN17mm f/1.7M

The TTArtisan 23mm f/1.4 and the Yongnuo YN17mm f/1.7M side by side, computed from this guide's catalogue.

Which to pick

Pick the TTArtisan 23mm f/1.4 if you want a brighter f/1.4 (0.6 stops more light), for dim light and softer backgrounds; coverage of APS-C, so it suits the larger-sensor bodies too; and a fit on more cameras (180 against 49 in this guide). Pick the Yongnuo YN17mm f/1.7M if you want autofocus and a design for Micro Four Thirds, which usually means smaller and lighter.

Still torn? Ask the guide about the TTArtisan 23mm f/1.4 and the Yongnuo YN17mm f/1.7M

Specs side by side

Rows that differ are in full colour; the better value is marked where one is better by any measure.
Spec	TTArtisan 23mm f/1.4	Yongnuo YN17mm f/1.7M
Maker	TTArtisan	Yongnuo
Focal length	23mm (prime)	17mm (prime)
Full-frame equivalent	34mm on APS-C	34mm on Micro Four Thirds
Maximum aperture	f/1.4brighter	f/1.7
Made for	APS-C	Micro Four Thirds
Mounts	Sony E, Fujifilm X, Nikon Z, Canon RF, L-Mount, Micro Four Thirds	Micro Four Thirds
Stabilised	no	no
Autofocus	no, manual focus	yesautofocus
Cameras it fits	180 in this guidefits more cameras	49 in this guide

Focal range, in full-frame terms

TTArtisan 23mm f/1.4: 23mm on APS-C, like 34mm.

Yongnuo YN17mm f/1.7M: 17mm on Micro Four Thirds, like 34mm.

Aperture

TTArtisan 23mm f/1.4: f/1.4 wide open.

Yongnuo YN17mm f/1.7M: f/1.7 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

49 cameras in this guide take both, so either works on the same body. In all, the TTArtisan 23mm f/1.4 fits 180 and the Yongnuo YN17mm f/1.7M 49.