Camera 7D - Tragic Lantern installation as at 2/12/2013.
Canon sound recording is enabled (Auto) in the canon menu. AGC Digital gain control is on.
1 - Go to Sound recorder and record a new clip - OK 2 - Repeat step 1 without choosing to listen to teh audio file - OK 3 - Select playback the selected file. Plays the selected file and appears to turn offthe microphone. Attempts to record a new audio clip results in no sound being recorded.
Attempting to record a video works but without sound being recorded.
Canon sound recording is still enabled (Auto) in the canon menu. AGC Digital gain control is still on.
Cycling the power restores audio recording.