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A full explanation on all of the applications of this tool would be complex
and beyond the scope of this manual. If you would like to know more
about color mapping, please speak with your printer or consult the
electronic prepress section of your local library or book store.
Auto Tab
e Auto tab sheet has percentage settings for both Shadow and
Highlight. When you use the Auto button, the FlexColor application
computes what it thinks the highlight and/or shadow values should be
based on the histogram of your image. It then modifies the values by the
percentages that you set here to find the final setting. e percentage is
applied to the difference between the highlight and shadow settings.
For example, if the Auto % for Highlight is set to 2 and you use the auto
function on an image in which the highlight might normally be 200, then
FlexColor will assign a highlight value of 196 (provided the shadow value
was zero). If you find that you frequently need to adjust the highlight or
shadow values to be tighter than the auto function normally chooses,
then use a positive setting here. Positive settings will result in a relative
increase in the contrast.
You are able to set negative values for the Auto % settings. is will
make the automatic controls use less extreme settings for highlight and
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