You asked

What is 8 25mm on micro four thirds in full frame?

8-25mm on Micro Four Thirds gives the view of 16-50mm on full frame.

The same view on every common format:

Crop factors are by the sensor diagonal, rounded as they're usually quoted; a format with a different shape (4:3 against 3:2) frames a little differently across the width. More in the focal length converter.

Computed from the sensor sizes, not written by a model.

Full frameMicro Four Thirds (yours)Same lens: Micro Four Thirds frames 2× tighter
The same 8mm lens (the wide end) on Micro Four Thirds and on full frame.
8mm on full frame · 132°8mm on Micro Four Thirds · 97°
How wide 8mm (the wide end) sees on each.

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