quote from the LX5 manual regarding the banding:
When recording pictures or half-pressing the shutter button, reddish stripes may
appear on the LCD monitor. Alternatively, part or all of the LCD monitor may turn
a reddish colour.
This is a characteristic of CCDs, and it appears when the subject has
a bright part. Some unevenness may occur in the surrounding areas,
but this is not a malfunction.
It is recorded in motion pictures but is not recorded on still pictures.
It is recommended that you take pictures while taking care not to
expose the screen to sunlight or any other source of strong light.