I'm thinking of swapping my 5D (MK 1) for a 5D Mark II and have been doing some reading re the AF-ON button.
I have my current 5D set so that the AE-Lock button performs autofocusing and pressing the shutter halfway triggers AE-Lock. Looking at the options available in CFn on the Mark II, I can have pretty much the same behaviour with option 3 selected.
My question is... What will the AE-Lock (*) button do???