Full Panasonic service Manual, as described, no problems
Text excerpt from page 16 (click to view)
OTHER RECORDING FUNCTIONS
1. Align the mode dial with M (Manual Exposure). 2. Use [ ] and [ ] to
specify the shutter speed, and then use [ ] and [ ] to specify the aperture value.
Shutter speed value
IMPORTANT! � The shutter speed and aperture value on the monitor screen will turn orange when you press the shutter release button half way if the image is over-exposed or under-exposed. � You may not be able to achieve the brightness you want when recording an image that is very dark or very bright. If this happens, adjust the shutter speed. � Using slow shutter speeds can cause static noise to appear in the image. � At shutter speeds slower than 1/8 second, the brightness of recorded image may not be the same as the brightness of the image that appears on the monitor screen.
Aperture value
3. Compose the image and then press the shutter
release button.
