Univex SB-900 user manual Flash shooting support functions, AF-AssistIlluminator, D–58

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Flash modes and functions

Flash shooting support functions

AF-Assist Illuminator

When the light is too dim for normal autofocus operation, the SB-900’s AF-Assist illuminator enables you to perform autofocus photography.

•The SB-900’s AF-Assist Illuminator supports the dynamic-area AF system.

•You can set the SB-900’s AF-Assist Illuminator to activate or cancel in the custom setting mode. (kC-23)

•The AF-Assist Illuminator cannot be used with cameras not compatible with CLS and COOLPIX cameras.

■Notes on using the AF-Assist Illuminator

•The AF-Assist Illuminator is available, if an AF lens is mounted and the camera’s focus mode is set to S (Single Servo AF with focus priority), AF-A, or AF.

•The effective shooting distance with the AF-Assist Illuminator is approx. 1 m to 10 m (3.3 to 33 ft.) from the center of the image with a 50mm f/1.8 lens. The shooting distance varies depending on the lens in use.

•With a D3 camera, for example:

Suitable lens focal length is between 17 mm and 135 mm. Focus areas for each focal length, in which autofocusing is available, are as follows:

17 mm – 19 mm 20 mm – 105 mm 106 mm – 135 mm

•The AF-Assist illuminator will not light up, if the camera’s autofocus is locked or the SB-900’s ready-light does not come on.

•Refer to your camera user’s manual for more information.

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