As far as weight goes, that is something I always have to contend with. I own a Wisner 8x20 Expedition. It has both vertical and horizontal backs and front standards. In either configuration, especially the vertical, this 11lb camera shoots with some pretty large lens. I use a 17x20 Wollensak Versar (22 1/2") lens that is a pretty heavy cannon. I just use this under the lens. The problem with this camera is not ever the weight of the lens but the small 5 1/4" lens boards that it was designed with. I'm still scratching my head on that one. If Ron ever reappears I'll ask him why such small boards on ULF cameras.