Olympus D-300 - Manual (Page 32)

W
OFF (FLASH OVERRIDE) FILL-INFLASH(FORCEDACTIVATION)
When you don’t want the flash to fire even in the
dark or when you want to shoot such subjects as
fireworks.
In the Off mode, the flash does not fire even in low-light
conditions. Use this mode in situations where flash
photography is not desired or is prohibited or in twilight or
night scenes.
When you want the flash to fire all the time.
In the Fill-In Flash mode, the flash fires regardless of available
light. For example, this mode can be used to brighten up a
subject’s shaded face or under artificial lighting such as back-
light, fluorescent light.
◆ Since a slow shutter speed (down to 1/8 seconds) is
automatically selected in low-light situations when in
the Off mode, the use of a tripod is recommended to
prevent blurred pictures caused
by camera shake.
Note:
◆ Use this mode within the flash working range (Page 30). It
may not work well under excessively bright light.