Four at present; a Durst SM-183 I bought 20 years ago with both Condenser and a CLS301 head and all the goodies for it; two LPL's a 4500II and a 4550 XLG and a Valloy II with the original Leitz lens that I've had as long as the Durst. Have almost every Rodagon lens made from 50 to 240 MM for them, plus a few Apo's and a couple of Componon-S & G-Claron. I hear there may be a 4x5 Durst that needs a good home, so the number could grow. Luis