One reason I've been holding onto my micro four-thirds kit, specifically the G5, is the ability to use the Panny 100-300mm lens - for an effective 600mm while shooting wildlife, etc. Yes, the FZ200's sensor is much smaller. But if this is the kind of result we can expect when 600mm optical zoom is cropped to 1200mm, I wonder if I might not get by just fine wih the FZ200.