AF-assist illuminator does not light:

AF-assist lamp does not light if AF-Cis selected for autofocus mode

(0 91). Choose AF-S. If an option other than auto-area AF is selected for AF-area mode, select center focus point (0 96).

The camera is currently in live view or a movie is being recorded.

Off selected for Custom Setting a8 (Built-inAF-assist illuminator) (0 286).

Illuminator has turned off automatically. Illuminator may become hot with continued use; wait for lamp to cool down.

Flicker or banding appear during live view or movie recording: Choose an option for Flicker reduction that matches the frequency of the local AC power supply (0 329).

Bright bands appear during live view or movie recording: A flash or other light source with brief duration was used during live view or movie recording.

Noise (bright spots, randomly-spaced bright pixels, fog, lines, or reddish areas) appears in photos:

To reduce randomly-spaced bright pixels, fog, or lines, choose lower ISO sensitivity or use high ISO noise reduction (0 109, 277).

To reduce bright spots, randomly-spaced bright pixels, or fog at shutter speeds slower than 1 s or to reduce reddish areas and other artifacts in long time-exposures, enable long exposure noise reduction (0 277).

Turn Active D-Lightingoff to avoid heightening the effects of noise

(0 175).

Photos are blotched or smeared:

Clean lens.

Clean low-pass filter (0 394). Colors are unnatural:

Adjust white balance to match light source (0 145).

Adjust Set Picture Control settings (0 163).

Can not measure white balance: Subject is too dark or too bright (0 157).

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