I tried to search this forum under various headings, but I cannot seem to find the topic. I need to fire the shutter on a Canon AE-1 remotely, by electrical means. I cannot use a cable release by itself or other independant mechanical means, due to the tie-in with the rest of the controls on the field equipment. I considered installing a cable release, set the shutter speed, then interrupting the battery control circuit. After locking down the cable release in the firing position, I presume that I can initiate a firing by allowing the battery circuit to re-enegrize through the field control circuit. Film advance would be handled by Powerwinder A-2. If this is feasible, was there an attachment made for this situation that I could use?