Nikon D300 User Manual page 412

Problem
AF-assist illuminator does
not light.
Photos are blotched or
smeared.
Colors are unnatural.
Can not measure white
balance.
Image can not be selected
as source for preset white
balance.
White balance bracketing
unavailable.
n
386
Solution
• Camera is in focus mode C.
• Center focus point is not selected
for single-point AF or dynamic-
area AF.
• [Off ] selected for Custom Setting
a9 ([Built-in AF-assist
illuminator]).
• Illuminator has turned off
automatically. Illuminator may
become hot with continued use;
wait for lamp to cool down.
• Clean lens.
• Clean low-pass filter.
• Adjust white balance to match
light source.
• Adjust [Set Picture Control]
settings.
Subject is too dark or too bright.
Image was not created with D300.
• NEF (RAW) or NEF+JPEG image
quality option selected for image
quality.
• Multiple exposure mode is in
effect.
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