The service was as expected: fast and efficient. I bought the wide-angle converter for my Panasonic 14mm mFT lens, and am - in the end - very pleased with it. For anyone who wants to know, I found it almost impossible to assemble the adapter and converter bayonet assembly, and finally took it to a Panasonic store where a man with stronger fingers than I have managed it. Panasonic recommend that taking the converter off the lens (and putting it back on again) should be done via the bayonet fitting, but I will not be doing that. The other side of the adapter is a screw thread which fits the lens and goes on very easily: that's how I shall be using it.