I bought two rolls of it a few months ago myself that I am yet to shoot. Given that the dedicated developer is not particularly cheap I have been curious about alternatives myself and have done a little searching online.I really like RPX 25, yes I realize its the same as Retro 80S.
What happens with CMS 20 if its in some other developer? I am itching to try it but not really looking forward to altering my usual Rodinal 1:50 formula. I have seen several different and sometimes-contradictory recommendations for Rodinal.
You can find some examples using Rodinal at this page from The Online Darkroom.
Also there are further images and information about processing methods in a continuation of the same discussion as above in Part Two and Part Three pages at The Online Darkroom.
The bottom line is if you don't use Adotech, expect a considerable loss of speed. I've never shot a really slow film before so the idea of rating it at EI 6 or so has some novelty value, I am not afraid to use a tripod when I need to. I thought the examples shown using HC-110 were good enough to try and it is a developer I have so will probably give that a go. But I think that Rodinal might be OK also if you are willing to alter your normal times and dilutions, see the linked text.
Cheers
Brett
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