User manual

17 • Highlight and shadow (tonal range)
ColorQuartet 5.0 Pro
160
• The appearance of the image in the feedback
window changes.
• The values in the Densitometer
window change.
• The values in the LCH
text fields of the Highlight/Shadow window change. The new values
show what tonal values will be mapped to extreme white (HL) and extreme black (SH) in the
reproduction.
Recommendations and tips
• We recommend that you use automatic highlight and shadow adjustment when you scan. If
you have images that require special treatment, you can use the histogram, color wheels, and/
or Densitometer to manually adjust the highlight and shadow points.
• A good way to adjust highlight and shadow interactively is by changing the histogr
am (bar
graph). To make the image lighter, drag the right-hand end of the histogram farther to the
right. To make the image darker, drag the left-hand end of the histogram farther to the left.
Each time you make a change, you will be able to judge the effect in the feedback
window.
• The highlight or “white” areas of a printed image are normally set up to contain a slight screen
dot (about 3-5%, depending on the printing process). Similarly, the shadow or “black” areas
are actually set up for about 95-97% color, rather than 100%. Be aware that using a very light
highlight setting may cause some of the lightest areas to “burn out” or print with no screen dot
at all. Any detail present in those areas will be lost, but the highlights may appear brighter and
the image may appear to have greater contrast. Conversely, a darker setting for highlight will
increase the amount of detail and tonal separation in the highlight areas, but the overall bril-
liance and contrast of the image will decrease.
• Using a very dark shadow setting may darken the shadow areas to the extent that they print as
solid color. Any detail present in those areas will be lost, but the shadows may appear deeper.
Conversely, a lighter setting for shadow will increase the amount of detail and tonal separa-
tion in the shadow areas of the image.
>>> Related topics:
A
uto Setup functions • Overview
Changing tonal range with the histogram
Checking tonal range and changing gray balance with the color wheels
Checking and changing tonal range with the LCH text fields
Changing tonal range with the Densitometer
Setting the highlight via “Saved Highlight/Shadows”