Just got a Panasonic G7 from Amazon, and the internal tilt sensor (gyroscope) is wayyy off. Like ~120 degrees off. The camera thinks I'm shooting portrait mode with the camera completely level. Is there a way to recalibrate the sensor? I believe Olympus cameras have this option, but I can't find one in the G7. Cheers.
There's nothing in the manual and I've never heard of a way to calibrate the tilt sensor. I think you'll have to send it off for repairs.
If you bought it new Amazon should replace it. If you got it used, Amazon will refund - contact them. Then you can shop for another, the G7 is well worth getting a good one. Mine may "go on the block" soon, I have a G85 pre-ordered. Haven't decided yet, I really like mine.
There is a reset function in the menu on the camera. Just reset the camera and the tilt sensor should be OK then.
On the G7, calibration is done by service. On the newer models it can be user calibrated. I don't believe RESET will fix this.