+1 on the Marchioni/Leitz Tiltalls (both of which are well-regarded for their quality of workmanship) with a qualifier: while they work very well for 4x5 and 2 1/4, I would not recommend them for use for 35mm work with any super-telephoto lenses. If my (20-odd years') experience is any indication, they are simply too light to support anything at or longer than 300mm (I have used them with my 300mm F2.8, 400mm F3.5 and 600mm F4 Nikkors, and have consistently found the results far too soft); for the longer glass, I break out a Manfrotto-Bogen monster (O56, with some modifications) and shoot away. As well, as I mentioned in a related post, I hold to the view that the Tiltalls do not respond well to Canadian winters (-25Cish and worse...) .