Anyway, here's the original post, it was a great film, r.i.p.
The last batch I tried with 90 minutes @ 24 °C and that was too much. Increased base fog and grain and no speed gain. This image was exposed at EI 1600 and it seems, that for finest results EI 800 or maybe 1200 are the limit.
Conclusion: the Rollei RPX 400 is a great new film and competes best with all premium films available at a very attractive price and is very suitable for developing in Caffenol-C-L. The film seems to need and can manage without drawbacks a forceful development. I have no doubts that the film will also perform beautifully at lower speeds with adjusted development and we have a handy film for speeds of EI 200 - 1600. Very high and affordable quality, what do we want more?
Cheers - Reinhold