Hitachi VM-H71A - Manual (Page 17)

Before You Begin
17
To Prevent Condensation
When the camera/recorder is moved from a cold place to a warm place,
leave it for a while until it reaches the ambient temperature before opening
the case.
Be careful that no water droplets or snow flakes enter when opening the
case. If they enter, the humidity inside rises and condensation is likely to
occur.
Moisture also condenses on the lens. If moisture condenses on the
lens, clear pictures cannot be recorded.
Dry the camera/recorder with the case open and use it after
condensation on the lens disappears.
Open the case if there is condensation. Otherwise, it is hard to dry the
camcorder. Otherwise, it is hard to dry the camera/recorder.