Less expensive, look for a used Marchioni or Leitz Tiltall (these are better than the current version and are about the same price--around $100 in good condition, and that includes the head). These were made to support a 4x5" press camera and weigh about 6 lbs. If you want something fancier, a Gitzo 3 series is right for a 4x5", aluminum or carbon fiber depending on your needs and budget. The leg locking collars on the current Gitzo 6x CF tripods are a major improvement over the older ones. I actually use a 5-series 6x CF (GT5540LS) legset, but I whittled my tripod collection down to two, since now I could get a "big" tripod that was the same weight as what I formerly considered my "medium" tripod, and I use it for much larger cameras as well.