I am doing some centennial pop prints and using my standard BLB bulbs for exposing the prints. I have 4 24" bulbs and am doing 5x7 prints right now. The exposure times are over an hour for the proper contrast negs, which are of course very dense. Or is it me that's dense? Does anyone have any suggestions on how to shorten these exposures? Are BL bulbs going to give me any more speed? What about other light sources? I am looking for anything that will shorten these exposures. I would prefer to use an artificial source to stay fairly consistent with print times.