I have a Majestic 1200 series tripod head. This is a cast, 6-pound, geared head with a 6x7 inch platform, designed to clamp onto a 1.5" post. I imagine this would be good for anything up to ULF. I would like to trade it for a tripod+tripod head of more modest size, but suitable for 4x5 cameras. Perhaps someone is moving up from 4x5 to ULF and would like to trade their 4x5 tripod for this geared head.