New Rodinal manual

MirkoBoeddecker · 2007-02-07T09:10:41+00:00

Hallo Mirko, nur damit keine Missverständnisse entstehen: Ich habe früher u.a. mit APX Rollfilmen gearbeitet und heute, seit es sie gibt, nutze ich dementsp...

MirkoBoeddecker

There is a newRodinal guide, which has been made available to us as a PDF. All Rollei films are now listed, so this information will likely be of interest to those who have already purchased Rodinal. Best regards, Mirko Summary: 20 °C Rodinal: Dilution: 1+25 // 1+50 ROLLEI Retro 100 5.0 min // 10 min ROLLEI Retro 400 7.5 min // 11.5 min ROLLEI Pan 25 6 min // 11 min ROLLEI Ortho 25 4 min // 6 min ROLLEI IR 400 7.5 min // 12 min ROLLEI R3 400 12 min ./.

zensusa

Hello Mirko, Although I have my own set of development times, tailored to my working method, which I use successfully, I am a little puzzled by the new Rodinal information sheet. Why do the development times differ so drastically between Agfa’s APX and Rollei’s Retro? Apparently, the emulsion and so on have remained the same, and only the support differs (in part). So why, to give some examples, is an Agfa APX now 1:25/1:50 with 8 mins/17 mins, whereas the Retro is only 5 mins/10 mins! The same stark differences apply to the APX 400 and Retro 400. So where do these differences come from? What has changed or must have changed? Best regards, Lothar

MirkoBoeddecker

Hello Lothar, I’ve noticed that too. I know from the folks at Agfa that the last batches of APX from 2004 turned out ‘differently’ from earlier batches. That’s as far as my information goes, though. It’s conceivable that they tried to counteract this during the coating process, which would have restored the correct values but resulted in different development times. It also seems logical to me that these batches were held back as raw material, because with such deviations (which are on a par with Efke, after all :-) the film would have had to be launched on the market completely differently. That, in turn, would explain why this particular material was still available as a Masterjumbo at the very end and sold off to insolvency buyers. As I said, this is partly speculation and I haven’t checked the dates either, so I can’t rule out a printing error at the moment. Be that as it may, the fact remains that the Rollei Retro films are excellent. So far, we haven’t had any disappointed customers, and even die-hard Agfa fans have put their doubts to rest after extensive testing. So let’s be glad that, whatever the circumstances, Agfa-style roll films are still available to buy. They aren’t too expensive either. What’s more, through their production, they go some way towards securing the future of manufacturing sites that are very close to my heart. Conclusion: I’m happy to sell the Retros. Best regards, Mirko

zensusa

Hello Mirko, Just so there’s no misunderstanding: I used to work with APX roll films, amongst other things, and now that they’re available, I use the 100/400 roll film Retros. I use the same development times for the Retros as I did for the APX films back then. I don’t use Rodinal, but R09, Promicrol and CG512, but the old APX times have so far applied to the Retros with all three developers. Hence my surprise at the extreme deviations with Rodinal that have now been reported, as I have so far noticed practically no changes with the films I have. Just for your information. Have a nice day. Regards Lothar

Christoph

Hello, It’s great that the development times for Rollei films are now included. However, I have a general question about these instructions. What are the speeds of these films, particularly the high-speed ones such as R3, Infrared, Delta 3200, T-Max 3200, Neopan 1600... Perhaps someone knows. Regards, Chris