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Beep does not sound:
• Off is selected for Custom Setting d1 (Beep; 0 275).
• Camera is in quiet shutter-release mode (0 86).
• Camera is in focus mode C or M (0 74).
• Release is selected for Custom Setting a2 (AF-S priority selection;
0 264).
• Movie is being recorded (0 58).
Photos not recorded in live view mode:
• Sound of mirror clicking down when shutter-release button was pressed
halfway in hand-held mode was mistaken for sound of shutter (0 54).
•Unless Release is chosen for Custom Setting a2 (AF-S priority
selection), shutter release is disabled if camera is unable to focus when
focus mode S is selected in hand-held mode (0 54, 264).
Randomly-spaced bright pixels, reddish areas, or other irregularities (“noise”) appear in
photos:
• Choose lower ISO sensitivity or use high ISO noise reduction (0 96, 259).
• Shutter speed is slower than 8 s: use long exposure noise reduction
(0 258).
• Reddish areas or other artifacts appear in long time-exposures: turn long
exposure noise reduction on when shooting at a shutter speed of
“A” (0 258).
AF-assist illuminator does not light:
• Camera is in focus mode C (0 74).
• Center focus point is not selected for single-point AF or dynamic-area AF
(0 76).
• Off selected for Custom Setting a9 (Built-in AF-assist illuminator)
(0 268).
• 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 (0 358).
Colors are unnatural:
• Adjust white balance to match light source (0
134).
• Adjust Set Picture Control settings (0 154).
Can not measure white balance: Subject is too dark or too bright (0 145).
Image can not be selected as source for preset white balance: Image was not created
with D300S (0 148).