Spatial Frequency Response (SFR) Curve Graphs

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https://omeka-s.library.illinois.edu/s/illinois-digitization/item/4624
Title
Spatial Frequency Response (SFR) Curve Graphs
Description
Lightness Tab selected, the graph shows horizontal and vertical gray slant lines measured favorably, reaching past 250 dots per inch (dpi) resolving at 50% amplitude and past 550dpi at 10%, toward the highest effective resolution Nyquist Frequency aim for an image captured at 605dpi.

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