Compare lenses

Olympus M.Zuiko 25mm f/1.8 vs Yongnuo YN25mm f/1.7M

The Olympus M.Zuiko 25mm f/1.8 and the Yongnuo YN25mm f/1.7M side by side, computed from this guide's catalogue.

Which to pick

On these specs they are close to even: hold both if you can, and let the price, the handling and the lenses you want decide.

Olympus M.Zuiko 25mm f/1.8: 25mm on Micro Four Thirds, like 50mm.

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

Olympus M.Zuiko 25mm f/1.8: f/1.8 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.

How wide each sees, at each end, on the sensor it was made for.

49 cameras in this guide take both, so either works on the same body.