Nikon N90 instruction manual Autofocus with Main Subject OFF Center, Single Servo AF mode

AUTOFOCUS WITH MAIN SUBJECT OFF CENTER

In Single Servo AF mode

As previously noted, in Single Servo autofocus, focus is locked as long as the shutter release button is kept lightly pressed. Use this feature for off-center subjects. In the following procedure, Spot-Area AF demonstration photos are used.

•If there is substantial difference of brightness between subject and background, switch to Center-Weighted or Spot Metering and use AE-L lever. See pages 88 to 89.

•With a moving subject, focus cannot be locked.

1.Position focus brackets on subject and lightly press shutter release button to start autofocus operation.

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