Hi everyone, I've just purchased a lovely Schneider Kreuznach 5.6/210 12/370, and was kindly given a Linhof Technika plate to go with it, but alas, no lock/locking ring, rendering the lens useless to me at present. Anyone know 1. If these rings are so called 2. Where can I get the damned things from in NZ or very close by? Thanks for any help as usual.