303
Focus does not lock when shutter-release button is pressed halfway: Use A AE-L/AF-L
button to lock focus when AF-C is selected for focus mode or when
photographing moving subjects in AF-A mode.
Can not select focus point:
• Unlock focus selector lock (0 107).
• Auto-area AF selected, or face-priority AF selected in live view; choose
another mode (0 103).
• Camera is in playback mode (0 225) or menus are in use (0 250).
• Press shutter-release button halfway to start standby timer (0 54).
Can not select AF mode: Manual focus selected (0 100, 115).
Can not select AF-area mode: Manual focus selected (0 100, 115).
Image size can not be changed: Image quality set to NEF (RAW) (0 97).
Camera is slow to record photos: Turn long exposure noise reduction off
(0 255).
AF-assist illuminator does not light:
• AF-assist illuminator does not light if AF-C is selected for autofocus
mode (0 100) or if continuous-servo autofocus is selected when the
camera is in AF-A mode. Choose AF-S. If an option other than auto-area
AF is selected for AF-area mode, select center focus point (0 110).
• The camera is currently in live view.
• Off is selected for Custom Setting a9 (Built-in AF-assist illuminator,
0 261).
• Illuminator has turned off automatically. Illuminator may become hot
with continued use; wait for it to cool down.
Smudges appear in photographs: Clean front and rear lens elements. If
problem persists, perform image sensor cleaning (0 289).
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