I like shooting tall (vertical) panoramas and am wondering how to do this with my 4x10 Canham camera which is really set up only to shoot horizontally. I can flop the camera over to the side 90 degrees with my tripod head, but this seems a bit unstable at times and Im wondering if there are any commercially available devices to circumvent this type of positioning. What I am looking for is some kind of bracket that can be used to hold the camera on top of the head in the vertical postion. I am aware of the Gitzo G541 (anyone have any experience with this for this type of application?) but it doesnt seem a solution to my desire. Currently Im guessing that i might need to have a custom bracket made but if there is something commercially available, Id rather go that route. Suggestions?