Compare lenses

Olympus M.Zuiko 25mm f/1.2 PRO vs Yongnuo YN25mm f/1.7M

The Olympus M.Zuiko 25mm f/1.2 PRO and the Yongnuo YN25mm f/1.7M side by side, computed from this guide's catalogue.

Which to pick

Pick the Olympus M.Zuiko 25mm f/1.2 PRO if you want a brighter f/1.2 (1.0 stops more light), for dim light and softer backgrounds. On these specs the Yongnuo YN25mm f/1.7M 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 Olympus M.Zuiko 25mm f/1.2 PRO and the Yongnuo YN25mm 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	Olympus M.Zuiko 25mm f/1.2 PRO	Yongnuo YN25mm f/1.7M
Maker	Olympus	Yongnuo
Focal length	25mm (prime)	25mm (prime)
Full-frame equivalent	50mm on Micro Four Thirds	50mm on Micro Four Thirds
Maximum aperture	f/1.2brighter	f/1.7
Made for	Micro Four Thirds	Micro Four Thirds
Mounts	Micro Four Thirds	Micro Four Thirds
Stabilised	no	no
Autofocus	yes	yes
Weight	410 g	not listed
Cameras it fits	49 in this guide	49 in this guide

Focal range, in full-frame terms

Olympus M.Zuiko 25mm f/1.2 PRO: 25mm on Micro Four Thirds, like 50mm.

Yongnuo YN25mm f/1.7M: 25mm on Micro Four Thirds, like 50mm.

Aperture

Olympus M.Zuiko 25mm f/1.2 PRO: f/1.2 wide open.

Yongnuo YN25mm 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.