In what order did you put on and take off the multiplier and the lens? You MUST put the 2x on the camera first, then the lens. You MUST take them off in the opposite order: lens comes off the multiplier first, then the multiplier comes off the camera. If you did not do this, perhaps someone here can tell you how to fix it. The only way I know is to send it in for repair... Bob Bob Adler Palo Alto, CA http://www.rgaphoto.com ________________________________ From: James <jmswllms@xxxxxxxxxxxxx> To: The List <hasselblad@xxxxxxxxxxxxx> Sent: Thu, February 24, 2011 10:15:22 PM Subject: [HUG ] Help I have borrowed a 150mm sonnar lens and a 2x multiplier and I am having problems. The lens shutter speed and fstop rings will not turn, they are locked on 4 and B and the lens will not shoot. Also there are three metal levers, one is marked with V X M next to it, what are these for. The multiplier is in great shape but I was wondering what are the adjustments for exposure, how many stops do I adjust for. I hope you guys can help, thanks............James