So I have an RZ. Been shooting mostly B&W with it, but the Velvia is oh so nice. I can and have been scanning it, but I want to project some images and blow some socks off at the local camera club... but I can't seem to find a decent+affordable projector. There's one on eBay right now asking almost $1000 that seems to be some monstrous 750W thing for lighting up the side of a building. Are there normal-room-sized projectors (say, for a 50" screen) readily available second-hand? Where (I'm in AU but KEH etc are OK) ? I'm also considering building one. Would it be sufficient to get a nice (high colour-temp) bright bulb, heat-absorbing glass, condenser from a 6x7 enlarger and an old lens from an RB? I can take care of the mechanical and electrical stuff. 35mm projectors seem to have lenses around the 90mm f/2.5 range, which means that a 180mm f/4.5 ought to give me the same image size and probably enough brightness. I was thinking of using an automotive-style 5600K HID lamp or two, but I don't know if their spectrum is continuous. Any thoughts?