This morning we took a walk around the Los Jilgueros Preserve and put our D810's through their paces.
I want to be very comfortable with it before we get to the Grand Tetons.
I don't have any zooms or many lenses at all for that matter that will work on the new full frame Nikon and glass is very expensive.
I am quite happy, in fact ecstatic at the resolution. No problems getting into a shooting routine.