Nikon F4 Body Only, F4S instruction manual Special Focusing Situations

-With the AF-L button depressed, focus will be locked even if you rem ove your finger from the shutter release button.

-AF-L button can also be used in Single Servo Autofocus mode.

-Simultaneous use of AE-L (Auto Exposure Lock) button is recommended. In this case, turn AF-UAE-L simultaneous lock lever to ( •• ) and press AF-L button.

Special Focusing Situations

To successfully focus, whether using the F4's Electronic Range- finder, an optical rangefinder, or a clear matte field, the subject must be reasonably illuminated and have sufficient contrast. If the focus-not-possible indicator X appears, manually focus by estimating distance or choose an alternate focus target with the same distance, lock focus, then recompose.

The following situations are examples that are difficult to focus and require greater concentration to secure correct focus.

1)When shooting the following:

·Bright subject with a shiny surface, such as silver or aluminum .

·Strongly backlit subject.

·Scene with variety of subjects located at different distances.

2)When using a linear polarizing filter, or special filter such as a soft-focus filter. (A circular polarizing filter can be used for autofocus operation.)

R60 (red) and 056 (orange) filters will interfere with Elec- tronic Rangefinder and autofocus operation. When using these filters, focus manually.

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