What is 45 150mm on micro four thirds in full frame?

45-150mm on Micro Four Thirds gives the view of 90-300mm on full frame.

The same view on every common format:

• Medium format (44 x 33): 114-380mm
• Full frame: 90-300mm
• APS-C: 60-200mm
• APS-C (Canon): 56-188mm
• Micro Four Thirds (yours): 45-150mm
• 1-inch: 33-111mm
• 1/1.3-inch: 25-83mm
• 1/1.7-inch: 20-65mm
• 1/2.3-inch: 16-54mm

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.