I have more experience with Fomapan 100 in sheet film sizes than 120, but I have used both and have not found Fomapan 100 to be deficient in any way. Yes, if you are working in reciprocity territory, you have to be prepared for some seriously reciprocity compensation (more than most any other film) once times go much beyond 2 or 3 seconds, but I have come to like Fomapan's unique response curve a lot. The film responds beautifully to the Thornton 2-Bath developer.
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