Nikon D300 User Manual page 411

Problem
Image size can not be
changed.
Can not select focus point
Camera is slow to record
photos.
Photos not recorded in
live view mode.
Randomly-spaced bright
pixels ("noise") appear in
photos.
Solution
[Image quality] set to [NEF (RAW)].
• Unlock focus selector lock.
• Auto-area AF selected for focus
mode: choose another mode.
• The camera is in playback mode.
• The camera is in menu operation.
• Press shutter-release button
halfway to turn monitor off or
activate exposure meters.
Turn long exposure noise reduction
off.
• Sound of mirror clicking down
when shutter-release button was
pressed halfway in hand-held
mode was mistaken for sound of
shutter.
• 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.
• Choose lower ISO sensitivity or
turn high ISO noise reduction on.
• Shutter speed is slower than 8 s:
use long exposure noise
reduction.
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