Sony DSLR-A850 Digital Camera User Manual


 
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The AF illuminator does not operate when the focus mode is set to
Continuous AF or the subject is moving in Automatic AF.
The AF illuminator does not operate when the center area is not selected
with [AF area] set to (Local).
The AF illuminator may not operate with focal lengths of 300 mm or
longer.
When a flash (sold separately) is attached, the AF illuminator of the flash
is used.
You can deactivate the AF illuminator with [AF illuminator] in the
Recording menu (page 109).
You can set the distance of a subject.
AF illuminator
Press the shutter button halfway down, a
red illuminator is automatically emitted
until the focus is locked, according to the
situation.
When you shoot a subject under dark
conditions, or when you shoot a low
contrast subject, the AF illuminator
allows the camera to focus more easily on
the subject.
AF illuminator
Shooting with Manual focus
1 Set the focus mode lever to MF.