Hi I am currently trying to figure out the times for Fuji Acros 100 for 120 film in Tetenal Ultrafin 1:30. The reason for this, is that the development time for 1:20 is the almost ridiculously 3.5 - 4 minutes (I use 4 minutes, but the massive dev chart operates with two times for it). I was planning to sacrifice a 35mm roll, shot at the same exposure, then cut to smaller pieces to test out where the time for 1:30 is, to get a less critical development time for this film in Tetenal Ultrafin. But, is there any difference between 35mm Acros and the 120 film? (I see sometimes that 35mm and 120 film differ in times on the massive dev chart). Does anyone know?