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4x5 Extended Red Films... Rollei RPX 25, RPX 400... Any 100 ASA ?

Darkroom: Film, Processing & Printing - www.largeformatphotography.info
I'm aware that Rollei RPX 25 and 400 ISO films have extended red sensitivity. I'm NOT looking for true infrared films. But... are there any 4x5 100 ISO films similar in spectral sensitivity to Rollei RPX 25 and RPX 400?

Someone on Photrio mentioned Rollei Retro 400s being approximately 100 ISO. Might this be a good candidate?
Date: Dec 11, 2017   


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