What is 50 200mm on micro four thirds in full frame?

50-200mm on Micro Four Thirds gives the view of 100-400mm on full frame.

The same view on every common format:

• Medium format (44 x 33): 127-506mm
• Full frame: 100-400mm
• APS-C: 67-267mm
• APS-C (Canon): 62-250mm
• Micro Four Thirds (yours): 50-200mm
• 1-inch: 37-148mm
• 1/1.3-inch: 28-111mm
• 1/1.7-inch: 22-87mm
• 1/2.3-inch: 18-71mm

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.