Before I toss yet another Contax in the dust bin, I was wondering if anyone else had this problem. My tvs ii works fine with the tele-photo at either its widest setting or in the mid-range. But once I extend it even a little past the mid-range, the viewfinder info-bar goes dark, and the shutter ceases to work...though when I retract the lens, the shutter will then click, and the film will advance.