To anyone that's still interested! Thank you to all the people who responded to this question - very useful.
Experiment: I thought I'd give a quick update based on the test I finally got round to performing: 1. Set the MZ-S NOT to fully pull a completed film back into the canister 2. Take a manufacturer-rolled Delta400 (DX-coded) film and shoot 10 shots 3. Rewind the film 4. Using a dark bag, pull these shots out into a tank and expose - leave some leader on the unexposed part of the film 5. Shoot the rest of the film - but DON'T rewind it 6. Using a dark bag pull these shots straight out of the back of the camera into a tank and expose 7. Check the difference Rationale: The reason for running the test in this way is that it eliminates everything that I've had suggested as a possible cause of the imprinting problem i.e. DX/non-DX coding, film-type, film-batch etc. If the first part imprints and and the other doesn't you KNOW that it's being printed on the rewind - there are no more variables (except the shape of the leader - I can't think that this has anything to do with anything - particularly as others a bulk loading without error). Results: Sure enough, all those people who stated that the data imprinting is done on the rewind were bang on the money. It was the failed rewind that was the problem NOT the failed imprint. Conclusion: Dodgy canisters? Not sure - was using plastic Jessops cannisters and someone did say they'd seen problems with them sticking. Have now run a dozen or so steel canisters from bulk without a problem. I will run some more tests on this as it may just be that I am being much more careful now with rolling and loading ;-) Footnote: I am a bit disappointed that Pentax misguided me (I deliberately prodded around the topic with their UK 'expert' and he ASSURED me that they imprinting was done on shot - not rewind.) However, I would like to stop sounding moaning for 2 seconds to say how much I LOVE the MZ-S - it is an absolute joy to use (although I am still learning to get the best out of it) - a friend of mine has recently got a Dynax7 (too many menus!!!) so I'll be intrigued to do some comparison. I know it's one loads of awards but I like the ergonomics of the MZ-S - SOMEONE HAS CLEARLY THOUGHT ABOUT SOMEONE QUITE IMPORTANT - THE USER!!!!! This may sound obvious but it is all too rare. Cheers P. Paul Wilkinson ELA Digital Content Service Centre of Excellence 1 Kingsway, London DDI: +44 (0) 207 844 7935 Mob: +44 (0) 7973 489 353 This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited. - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .