Autofocus with optional autofocus speedlights – Nikon F4 User Manual

Page 63

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Autofocus with Optional Autofocus


Although the F4’s autofocus works at lighting levels as low as

EV minus 1, performance may vary depending on subject de­

tail and contrast. In dimmest light conditions, use Nikon speed-

lights during AF operation, if it is too dark. The speedlight's AF
Illuminator lights up only in the Single Servo Autofocus mode.

1. Mount Nikon Autofocus Speedlight SB-24, SB-23, SB-22 or

SB-20 onto the F4’s accessory shoe.

2. Compose picture through viewfinder and lightly press

shutter release button.

3. Speedlight’s AF illuminator lights up and autofocus

operation begins.

• The focal lengths available when using AF Illuminator with AF

Nikkor lenses are 24mm to 105mm.

• For details, see Nikon speedlight instruction manual.


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