@ OFF (FLASH OVERRIDE)
When you do not want the flash to fire even in the dark or
when you want to shoot subjects such 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 twilighvnight
scenes.
Note:
Since a slow shutter speed (down to 1/2
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 movement.