I'm under the impression that this can't be done, but I hope I'm just missing something! I'd like to separate the AEL/AFL functions and assign them to separate buttons: I'd like AFL to be assigned to the back AF/AE LOCK button, and AEL to Fn1. From what I can discern from the manual, that can't be done: the Fn button can only take the function of the AFL/AEL setting. Is what I want possible?