Compares contrast and quality of four of the leading variable contrast papers available in the U.S.: Kodak Polycontrast F and Polycontrast Rapid F (both fiber-based); Kodak Polycontrast II RCF (resin-coated); and Ilford Multigrade Pearl RC (resin-coated). Provides charts for contrast grades, exposure adjustments, filter factors and developer/development options. -- AATA