Back on topic (Which happens to be "Things you may not know about the 7D" if we've forgotten)
:mad2: - In Focus area selection mode. The AF point lights up only to show which point had been selected, and is not indicative of a locked focus. A seperate focus lock indicator and an audible signal will indicate when the AF system achieved focus. I believe other cameras light up the AF point when the AF has been locked.
:mad2: - In Focus area selection mode. The AF point lights up only to show which point had been selected, and is not indicative of a locked focus. A seperate focus lock indicator and an audible signal will indicate when the AF system achieved focus. I believe other cameras light up the AF point when the AF has been locked.