i have an f line arca swiss 6x9 metric with the orbix...i added a 4x5 rear standard, 4x5 bellows and presently shoot 75% 4x5 with this arrangement...the arca swiss is the finest field camera i have used, ever...all the controls are in the right place and perform flawlessly...i am always impressed with the ease of the fine focus with the arca swiss and the metric orbix front axis tilt is a very elegant and perfect design...using a med size f64 back pack with the camera on a gitzo tripod carried over my shoulder, i can go all day without feeling over loaded although i am usually within 2 miles of my car...lew at photogizzmo in nyc is an excellant dealer in arca swiss equipment...good luck, tom g.