You asked
What is 12 200mm on micro four thirds in full frame?
12-200mm on Micro Four Thirds gives the view of 24-400mm on full frame.
The same view on every common format:
- Medium format (44 x 33): 30-506mm
- Full frame: 24-400mm
- APS-C: 16-267mm
- APS-C (Canon): 15-250mm
- Micro Four Thirds (yours): 12-200mm
- 1-inch: 8.9-148mm
- 1/1.3-inch: 6.7-111mm
- 1/1.7-inch: 5.2-87mm
- 1/2.3-inch: 4.3-71mm
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.