Sony MPK-TRV7 Operating Instructions Manual page 16

Underwater video light
In deep water or under locks where direct sunlight does not reach, recording with an
underwater video lights is recommended.
To record at night, use a powerful underwater video light.
Underwater video light such as
Sony HVL-M20/ML20/80DA
(not supplied)
Note on recording underwater
• Be sure to follow the safety rules for diving, such as diving period and depth.
• Remove the bubbles from the outside of the front glass before recording.
Attachable to the left and right
video light shoe.
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