Pioneer DC500 - Manual (Page 37)

EN-37
Using the Flash in External Flash Mode
When the camera is set to Ext Flash mode the camera’s flash will always fire. This will trigger the SeaLife
External Flash (SL960) or Digital Flash (SL960D) to fire.
In order to achieve proper image exposure, it may be necessary to select from one of the following three
flash modes:
NORMAL FLASH - This is the default setting ideal for proper
exposure from 1 yd (1m) to 2 yd (2m).
MACRO FLASH - This flash setting is ideal for shooting distances
inside of 1 yd. (1m)
FAR FLASH - Select this flash mode for best exposure beyond
2 yds (2m) shooting distance.
The above shooting distance may vary depending on water visibility and the reflectivity of the subject. Experiment
with different flash modes and adjust accodingly.
Press the flash button and select the appropriate flash mode using the ▲,▼,
t, or u buttons.