I don't know about some of you, but I really enjoy using Mirror Lock-Up. I find it to be a pain in the butt to flip through custom functions to activate it, then go through the same steps to turn it off, so....
Dear Canon,
If you're listening, I would love to see a new firmware update allowing for some sort of custom button configuration that allows me to engage/disengage MLU with the press of a button.
Can it be done?

