Nikon D300 User Manual (en)

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386
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AF-assist illuminator does 
not light.
• Camera is in focus mode C.
62
• Center focus point is not selected 
for single-point AF or dynamic-
area AF.
64
• [Off ] selected for Custom Setting 
a9 ([Built-in AF-assist 
illuminator]).
273
• Illuminator has turned off 
automatically. Illuminator may 
become hot with continued use; 
wait for lamp to cool down.
Photos are blotched or 
smeared.
• Clean lens.
• Clean low-pass filter.
373
Colors are unnatural.
• Adjust white balance to match 
light source.
126
• Adjust [Set Picture Control] 
settings.
146
Can not measure white 
balance.
Subject is too dark or too bright.
137
Image can not be selected 
as source for preset white 
balance.
Image was not created with D300.
140
White balance bracketing 
unavailable.
• NEF (RAW) or NEF+JPEG image 
quality option selected for image 
quality.
56
• Multiple exposure mode is in 
effect.
187
Problem
Solution
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