Quote: There's nothing special about the auto focus lamp, it's just light to help the camera see. So unless you absolutely need it to auto trigger (which can be important to certain situations). Taking a standard mag light and light up the area you wish to focus will do the same thing.
Quote: Flashlight pointed at subject.
Keeping a light pointed constantly at someone would be really annoying.
Which pin of the hot shoe provides the info on when the af assist light has to come on? Maybe I can custom incorporate a led into my flash.