Yeah well needless to say I am not hauling the thing up Mt. EVerest. I do the Weston thing with the 12x20...if it is further away than 100 yards from the is not photogenic anymore.
To answer you question about the size, my Korona is 23 x 20 in the back and when open it can go up to 25 inches in lenght. Bellows draw is 30 inches since there is 4 inches recessed at the back and an extra inch at the lens board.