Panasonic VDR-M30 Operating Instructions Manual page 84

:
Note
•
Do not use a colored object when setting the white
balance: The appropriate tint cannot be set.
•
Do not block the infrared sensor with hand, etc.
•
If a generally available tele or wide-conversion lens is
used, the auto white balance may not operate depending
on the recording conditions. If this happens, set to the
mode to match the recording conditions, or manually set
the white balance.
•
Be sure to remove the lens cap before turning the DVD
Palmcorder on: If the DVD Palmcorder is turned on with
the lens capped, the white balance will not work normally.
84
Infrared sensor block