Sealife Sea Dragon flash Instruction Manual page 22

Aiming the external flash
Make sure the flash head is directed at the subject before taking
a picture. If the flash is not aimed correctly the image may appear
underexposed (darker).
Remember that subjects appear closer underwater than they do
on land, so direct the flash a little over the intended target to
compensate for this underwater effect.
About the Flash Diffuser
The diffuser is used primarily for
close-up pictures to evenly
illuminate the subject resulting
in more vibrant colors.
Pull off the diffuser for
shooting distances beyond
2ft (60cm).
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