Tubes arrived in good shape!
They didn't work properly right out of the box, showing the well known "F---" issue. Following the hint in this discussion http://forums.steves-digicams.com/pentax-samsung-dslr/143135-jessops-pka-af-exte...
I had to scratch the mount plate after the farthest contact from locking pin, then the tubes started working as expected. Easy to do, but it would have been better if I had known it before

Cheers

Sent PM about Teleplus MC7 Macro converter.

PM sent.

Regards