Find out in this article,
- which requirements must be met for this Fixup and
- how to apply the Fixup.
1. Introduction
The Fixup Reduce Tonal Values in Midtones is available in the Workflow. This Fixup aims to reduce the tonal values in the midtones and thus brighten the printed image.
2. General
Use the Fixup Reduce Tonal Values in Midtones to reduce the tonal values in the midtones by the desired percentage and thus brighten the printed image. Among other things, use the Fixup to counteract poor linearization of the printer.
Find the Fixup in the Data Preparation tab of an Article, Order, or Production Job by
- entering the name of the Fixup in the Filter area,
- activating the Color option in the Category area,
- activating the Convert or Apply in the Action area,
- activating the CMYK, RGB or Tonal Value in the Search area.
3. Description
Use this Fixup to reduce the tonal values in the midtones. The lower the selected percentage, the lighter the printed image in the midtones.
3.1. Requirements and Functionality
For the Fixup to do what it promises, no specific requirements must be met, as the Fixup is applied to the entire print image (all object types).
Figure 1: The dialog of the Fixup Reduce Tonal Values in Midtones
The following options can be selected to increase the tonal values in the midtones:
- Template [1] – settings selected in the dialog can be saved as a template and thus applied to other Articles/Print Items.
- Dot Gain Curve [2] – the diagram shows the curve that should be applied. The curve is used to reduce the tonal values in the midtones.
- Input [3] – enter the percentage for which the midtone value should be reduced. If 50 is entered in this input field, the 50% tonal values are reduce to the percentage value selected in the Output option.
- Output [4] – enter the target value of the tone value here. If, for example, 75 is entered in this input field, the tone values of the midtones are reduce to the percentage value entered here, based on the percentage value entered for the Input option.
- Add [5] – add a new point to the curve. This allows you to change the steepness of the ramp in the curve as required.
- Linear Curve/Bezier Curve [6] – determine whether the curve should only consist of corner points or whether the curve should be made up of Bezier curves.
3.2. Before/After
To experiment with this function, refer to the sample file "Sample_Reduce Tonal Values in Midtones.pdf". The file was created with CMYK and should now be reduced slightly in the midtones.
After applying the Fixup, the file "Sample_Reduce Tonal Values in Midtones_End.pdf" is created. Here the tonal values in the midtones have been reduced by 25%. The values from Figure 1 were used.
Figure 2: Left: initial file; Right: edited file where the tonal values were reduced in midtones
Article update: Workflow 1.17.2 – 06/2024