The Paper White Compensation checkbox offers automated correction for the most
common issue with white preview. It reduces the artificial blue tone that can occur
when artificial paper whiteners (which look blue to colorimetric reading devices) are
present in paper. This makes the paper color viewed on screen in a print preview
mode more natural and more similar to what the eye sees viewing the printed image.
If there is no blue component (negative b* value) present in the white measurement,
this function will be grayed out, and unavailable. Checking the Paper White
Compensation checkbox will grayout the preview b value. If you wish to manually
adjust the b value for futher fine tuning of the preview, simply uncheck the checkbox
Reference Black Adjustment: The Ref Black button allows users to adjust the way
black previews on screen when using printer profile previewing functions such as
Photoshop’s Custom Proof Setup option to view a soft proof of how images will print to
a particular printer, colorant, and media combination. This adjustment does not effect
how images will print, its sole purpose is to adjust the on-screen preview of black.
Users can adjust the preview color of black in any way they choose through changing
the L*, a*, and b* values for black in this window. The new value of black will be
shown for comparison.
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