How the AF Assist beam on the EOS Digital Rebel XSi works.
Article ID: ART128502
|
Date published: 05/12/2015
|
Date last updated: 09/29/2015
Description
How the AF Assist beam on the EOS Digital Rebel XSi works.
Solution
In low light, the built in flash fires a series of flashes. To assist the auto-focusing, pressing the shutter button halfway may trigger the built in flash to fire a series of flashes. This is called AF Assist Beam.
It is effective up to approx. 4 meters / 13.1 feet away.