What is Rollei RPX 25?

Discussion in 'Black and White' started by 25asa, May 22, 2021.

  1. I have used a few rolls of this in the past, but never got a real feel for it yet. I haven't used it enough to make any comparisons. Is this emulsion a stand out on its own, or is it based off another film from the past? Is this a clone of Agfa APX 25? Or is it its own film with no comparison? I have some rolls in 35, 120, and 4x5 at the moment. My local store has it on sale, and I wasn't sure I was wanting to stock up on some more rolls or not. Is there anything special about this film that makes it stand out? Or is it a rather blah-say film in general? I really liked APX 25, of which I also have a stash of. My favorite 25 ISO film is Efke 25, but there is no comparison there. Another favorite slow film is Panatomic X, but that is 32 ISO.
  2. I just read someone believes this film is actually Agfa Aviphot 80 which is rated around 50 ISO. Why then is RPX 25 a 25 ISO film and not 50 then? I guess I can forget it being an APX 25 clone.
  3. I haven't tried the RPX 25 but I'm wondering if it could be an updated version of the Rolleipan 25 from several years back. I had a 100' roll so I shot a lot of it and got good results processing in in HC110 dilution H for 10' at 68 F. The recommended time for RPX is 5' at same dilution and temperature according to massive development chart. Going to dilution H would double the time to 10'. No guarantee, of course, but enough that I might have to try a few rolls.
  4. Its Aviphot 80 made by Agfa. I just developed the roll and its quite dense. Its been said this film has high contrast and I can see that in mine so far, even before I do scans off of it.
  5. Agfa-Gevaert coat a film known as Aviphot Pan 80 (AP-80) which turns up on the market under several different names. This is what I find:

    ADOX HR-50 is AP-80 with a in house modification called "Speed Boost".
    ADOX IR-HR PRO 50 is straight AP-80
    ADOX SCALA is straight AP-80
    Rollei RPX 25 is straight AP-80 converted and packaged by Harman Technology
    Rollei Retro 80 S is straight AP-80 converted and packaged by Foma in 35mm and by Harman Technology in 120 format.
  6. It's the other way : 35mm by Harman and 120 by Foma.
  7. fs999, you are correct and that's the last bit of confusion corrected.
    I wonder what will turn up next in the murky world of film coating, confectioning, packaging, and branding. The direct answer is to buy and test them all. But that's probably the business model.

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