Sony HVL-F60M - Manuel (Page 87)

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AF illuminator
In low-light or when subject contrast is low, when the shutter button is pressed
halfway down for Auto Focus, the red lamp on the front of the flash unit will light.
This is the AF illuminator used as an aid in Auto Focus.
• AF illuminator fires even when the flash unit is set to [ ] (flash off) mode.
• The camera AF illuminator does not operate while the flash AF illuminator is
operating.
• The AF illuminator does not operate while Continuous AF is used in focusing
mode (when continually focusing on a moving subject).
• The AF illuminator may not operate if the focal length of the lens is greater than
300 mm. The flash unit will not operate when removed from the camera.
• Depending on your camera, the AF illuminator may not fire.
• The AF illuminator does not fire when the LED light is on.