I checked the number of shots of my secondhand camera, Panasonic DC-G9.
Turn on the camera while holding down the Playback button and the AF/AE Lock button at the same time. Then, “ERR CODE DISP” will be displayed on the fifth page of the setup menu. (Normally, it is not displayed.)
Select “ERR CODE DISP” and press “Menu/Set” button.
Press “Menu/Set” button again.
The number in SHTCNT: is the number of shutters.
The number of shots taken by the Panasonic DC-G9 was 7,257.