Hi Chris
"I played with the 180 for a bit last night. The interface is a HUGE improvement. Getting to 100% preview is super fast and it's easy to move around the image. Adding that to the use of the focus mask to come on production units might have me very well shooting my exteriors untethered."
Was live View operational, and what is your understanding of Focus Mask, Is that to be used with the live view to set focus, or after to the check