Sealife Sea Dragon SL963 Instruction Manual page 22

Camera's flash setting
Almost all digital cameras allow you to select the flash setting to Auto,
Force ON, Force OFF or Red-Eye Reduction.
For SeaLife cameras, set the camera to Ext Flash mode (or Ext Flash
Auto mode). The SeaLife External Flash mode is a special underwater
program that synchronizes the camera's exposure program, color
balance and internal flash to the SeaLife external flash. The camera's
flash will always fire in Ext Flash mode.
For non-SeaLife cameras, select FORCE ON. Remember, your external
flash will only fire if your camera's flash fires.
Manual exposure controls
Some digital cameras include manual aperture and shutter speed
controls, which requires advanced knowledge of photography
principles. These controls are too advanced for this instruction
manual.
For SeaLife cameras, set the camera to Ext Flash mode (or Ext Flash
Auto mode). The camera will automatically select the best aperture
and shutter speed setting for underwater flash photography. Some
SeaLife cameras include Ext Flash Manual mode. Please refer to the
camera instruction manual for more details.
For non-SeaLife cameras with manual exposure controls, you may
want to take an underwater photography course to learn more about
using manual controls.
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