I got a great(?) deal on a Sunpak MZ440AF-CA Flash "Auto focus for Canon" What I am wondering is if it will work as expected on my Canon AE-1 Program. Teh instructions are not really clear but seem to imply that it was designed to work with an autofocus camera and may determine output based on focus point... but thats a guess. Since my camera can't report focus distance to it will it just fire at full power all the time? Am I better off looking for an older flash that was designed with the AE-1 in mind?