Summary Comparison by Quality
Classes
•Class One > 4100 DPI and Dmax of >3.0,
Suitable for all films and photos including Archival, B/W negs and T grain chromes
•Class Two 4000 to 2800 DPI and Dmax of
2.5 to 3.0, Suitable for many films and all prints.
•Class Three 2000 to 2800 DPI and Dmax of
2.3 to 2.5,
suitable for all prints and struggles for most films.