5. In the
Tonal Adjustments
section, drag the sliders to make
adjustments. Alternatively, you can type the values in the boxes
under the sliders. The adjustment controls include:
●
The
Midtone (50%)
control affects the full tonal range. The
Quartertone
,
3/4 Tone
,
Highlight
, and
Shadow
points are
adjusted according to the values in the
Midtone
control.
●
The
Quartertone (25%)
control affects the lower half of the
tonal range. The
Highlight
point is adjusted according to the
value in the
Quartertone
control.
●
The
3/4 Tone (75%)
control affects the upper half of the tonal
range. The
Shadow
point is adjusted according to the value in
the
3/4 Tone
control.
●
The
Highlight (10%)
and
Shadow (90%)
controls are the most
localized, and do not affect any other adjustment points.
●
Clicking
Reset
restores the tonal adjustment values to 0.0 and
the sliders to midpoint.
6. Repeat the process for any other separations that require tonal
adjustment.
7. Click
OK
to return to the Start Process dialog box.
The calibration curve channels are modified according to the
specified tonal adjustments.
Note: If you remake a plate using the
Tools
>
Plate Remake
menu item, all the
tonal adjustments applied to the original plate will be applied to the remake.
You cannot make further tonal adjustments to a remade plate.
Note: It is not possible to reduce solid colors (with 100% ink) using a
calibration curve adjusted with tonal adjustment. This is a limitation of Adobe.
If you want to reduce 100% solid colors (in particular, spot colors), you need
to set the
Ouput PT
parameter so that the
Screen Solids
value is 90%. For
example, in
Final Output
>
Calibration & Screening
, the
Screen Solids
value is
set to
90%
.
Tonal Control dialog box
Use the Tonal Control dialog box to apply custom calibration curves for
a specific separation, surface, or job selected for plate output, or to
make on-the-fly tonal adjustments to those curves.
Separation
This list contains a list of each separation, in any surface of the
job, that has been selected for output in the job. Select the
separation that you want to work on.
Curve Channel
This list displays the ColorFlow curve channel that has been
assigned for the selected separation. Use this list to select a
different curve channel, if required.
Tonal Control dialog box
629
