Auto focus systems require sufficient light and contrast to operate effectively. An AF assist illuminator provides the necessary light and contrast, when ambient conditions are not sufficient for auto focus operation. AF assist illuminators generally operate automatically, without requiring any additional action by the photographer. The AF assist illuminator’s light will not appear in the picture. This is a useful feature for photography in very dim light or total darkness.

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AF Assist Illuminator, 5.0 out of 5 based on 3 ratings