Originally Posted by
Michael R
I haven’t looked at the data sheets for the slower speeds, but at least in the case of the 400 Foma, I find it crappy they use “ISO” all over the place referring to exposure index numbers while it is not an ISO 400 film based on anything I see on their graphs (although it is still possible it is ISO 400 in some unnamed voodoo developer). Not many photographers are interested in trying to decipher this stuff which is why we have standardized speed methods such as ISO in the first place. If Foma says it is ISO 400, it should meet the ISO speed criteria in a fairly standard developer, so that people can set their meters to 400 and have reasonable expectations without nasty surprises.
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