Gary, I don't use a T-Ring with the Camera to Tak arrangement.
A CA 35 Adapter is screwed to the Tak and then the Camera just fits onto that, no threads for filters at all.
Behind the rear lens on the Tak there is a thread that accepts a 72 mm Filter, and presently I am using a Hutech 72mm LPR filter.
All In all it works pretty well
Leon
