Aperture Sizes and Screen Ruling for 500 Series

The following table was extracted from ANSI CGATS.4-1993 Appendix C. It in turn refers to ANSI/ISO 5/4:1983.

 

Nominal Screening Frequency Sampling Aperture
lines/inch lines/cm minimum size (mm)
65 26 3.5
85 33 3.0
100 39 3.0
120 47 2.0
133 52 2.0
150 59 2.0
200 79 1.5
300 118 1.0

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