Sony DSLR-A900 User Guide

• 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 (not supplied) is attached, the AF illuminator of the flash is 

used.

• You can deactivate the AF illuminator with [AF illuminator] in the 

 

Recording menu (page 112).

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