Tom Kershaw
Subscriber
The Rollei film range contains Agfa Aviphot 200 and Agfa Aviphot 80 in two different quality and price categories. If you know Ilford films in 120 format and Foma films in 120 format, then you can see which company did cutting, spooling and packing.
Rollei published in the past in german forums that RPX 100 and RPX 400 is produced for Rollei by Harman Technology, Rollei IR 400, Superpan 200 and Retro 400S are based on Agfa Aviphot 200 and Rollei 80S is based on Agfa Aviphot 80. RPX 25 is still a "secret". It is only known the film is spooled and packed by Harman Technology.
If you do some tests with RPX 25 you can see it is definitely shows the characteristic of aerialphot material and the film is infrared sensitive.
If you compare RPX 25 to Rollei 80S with an exakt test procedure (same exposure, development in one tank at the same time and analysis with a densitometer and a microscope ) you will see both films deliver equal results. They respond equal to different filters.
Thanks for the explanation. It is odd though that if the film is packaged by Harman, it hasn't been cut to the correct size.
