Ars Image IMAGO 320 35mm BW Film (36 exp) is a fine grain film with a very high sharpness and wide exposure latitude. This panchromatic film is coated on acetate base and is compatible with most available developers. Ars Image's black and white film is nominally rated at ISO 320, and can be used both indoor and outdoor in different lighting conditions. 320 ISO is the sensitivity of the film, which creates a correct and wide tonal range. This film provides you with higher detail in shadows, as well as a very fine grain. With some developments, it can be pushed up to 800 ISO. The 320 ISO selector is between 200 and 400, or you can set it at 200 ISO and over-expose by half stop.