Tobarus

Hi there, I just got my GH5 an looking at the sensor with the lens cap off I notice a tiny smudge/blotch or similar on the lower middle part of the sensor. After inspecting pictures I can't see anything on the output itself. Does anyone know what this is, or if there GH5 has the same? I attached a picture of the smudge as well... Hopefully someone can provide some insight, moreover everyone has the same, I really can't return the camera right now! ;-)