I have my camera normally in Av mode with a set shutter speed I don't want to go longer than, but I LOVE the recall function , I have set the AElock button to recall because I use af-on to start af operation so they're right next to each other. With normal Av I have my au servo set up to normal movement with no expansion etc, case 1. And on the ae lock button I have the camera set up for fast erratic motion with every setting, faster shutter , actually smaller shutter to give the af a bit more help, 4 expansion, customised case 6 etc. that way I can shoot EVERYTHING without taking the eye off my viewfinder, so all the things I had to change to switch between fast action and more
Normal movement in the menus I can now have active by moving my thumb 5 mm! Best thing ever! I also ha r one of the front custom buttons to switch to one shot when needed. It speeds up the shooting process from 3 minutes to a split second.