Nikon D300 User Manual page 590

autofocus. Once you have good focus, the red square
turns green.
You are not limited to the central 51-point AF area, like
in Hand-held
autofocus is active since the camera is focusing by
detecting contrast changes at the pixel level on the image
sensor. When you fire the shutter, the
out briefly while the picture is taken.
Use this mode for slower shooting and when you need
extreme autofocus accuracy. Contrast-detect autofocus is
rather slow, but very accurate. You can zoom in to
pixel-peeping levels (13x magnification) with the
Playback zoom in button
is great for macro shooting since you can select very
specific sections of the subject for focusing.
The AF-area modes do not apply when you are using
Tripod mode. They are overridden by the bigger
contrast-detect focus square. Be careful in this mode
because the shutter can be released even if the image is
not in focus.
Here are the screens and steps used to choose a
mode (see Figure
1. Select Live view mode
scroll to the right.
2. Select either
mode. The screen does not black out while
before starting autofocus. This
8-3):
from the
Hand-held or Tripod
590
Monitor will black
Live view
Shooting Menu
mode.
and