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The diffuser also softens the light, providing an alternative when no surface is available for bouncing the flash
(see Bouncing Your Flash on page 27).
Using the Autofocus-Assist Light
Camera autofocus systems can have difficulty locking onto a subject in dim light. When the ambient light level
is low, the VS-570C will emit a red autofocus-assist beam when you press your camera's shutter-release
button halfway to autofocus. The camera will then be able to autofocus by locking onto the projected light.
Note that the autofocus-assist light is available only when your camera's autofocus system is set to center or
multi-point autofocus. It is not available when single autofocus points other than the center point are selected.
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Using the Autofocus-Assist Light
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