Have just tried my first roll of this film, some familiar scenes plus a bit of testing to determine ‘my’ film speed. Rated at 400 for exposure. The zone 1 and 2 test shots clearly show this is not a 400 speed film (unless you want completely empty shadows). Used Adonal (Rodinal) 10 minutes. I shall be testing more on the assumption that 100 is a closer estimate (the same as I settled on for Fomapan 400). Nice look though and commendably fine grain.