Af-assist illumination, E –19 – Nikon SB-910 User Manual

Page 101

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E–19

E

Functions

Power zoom function canceled

Power zoom function can be canceled in the custom settings. (0B-18)

An “

” above the “

” indicator appears on the LCD panel when the

power zoom function is canceled.
The zoom head position must be manually set. The zoom head position does not

automatically change when the lens focal length is changed, the lens is replaced
or the Speedlight is turned off/on.
To set the zoom head position manually, see “Setting the zoom head position

manually” above.

AF-assist illumination

When light is too low for normal autofocus operation, the SB-910’s AF-assist
illumination enables autofocus photography.

The SB-910’s AF-assist illumination is compatible with the multi-point AF system.

AF-assist illumination cannot be used with non-CLS-compatible cameras and

COOLPIX cameras.

Notes on using the AF-assist illumination

AF-assist illumination can be used 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 flash-to-subject distance with AF-assist illumination is approx. 1 m

to 10 m (3.3 ft to 33 ft) for the center of the image with a 50 mm f/1.8 lens. The
flash-to-subject distance varies depending on lens in use.
Suitable lens focal length is between 17 mm and 135 mm. Focus points for each

focal length in which autofocusing is possible are:
D3 series camera focus points

17 – 19 mm

20 – 105 mm

106 – 135 mm

AF-assist illuminator will not light up if the camera’s focus is locked or the

SB-910’s flash-ready indicator does not come on.
Refer to the camera user’s manual for more information.

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