Originally Posted by James Emory
..... Still haven't decided what to control with the back button yet. Any suggestions?
Personally after trying different things for that Fn (function) button, I changed it to the P/A/S/M option. I like being able to just hold the Fn button with my thumb and use my front finger to turn the front dial and toggle quickly between Aperture or Shutter mode, etc. Just a finger and thumb of the left hand and you are quickly changing modes.