Appendix L 
Contrast Control with Paper Grades
For historical and technical reasons, paper grade 2 (or variable contrast filter 2 or the equivalent mix of blue and green light on variable contrast heads) is usually considered Normal for negatives with Normal contrast. For example, this is the grade of paper I used as the standard for my testing procedure (see Chapter 9). This means that paper grade 2 would become the target of all of your Zone System negative contrast adjustments, and theoretically your negatives would print well on that grade.
On the other hand, it is possible to customize your Normal Development Time so that any grade of paper ...
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