Makes adjustment to image colors by changing Saturation, Brightness & Contrast, Color Balance and Color Gradation.
Use the tabs at the top of the dialog to switch between the different Tune modes. Adjustments can also be saved as a Tune Preset by clicking the Add button at the top. This will save all current adjustments into a single preset that can easily be applied to images in the future by selecting it from the dropdown menu.
The Selection window of the JobComposer will display a preview of your alterations while you are working in the Tune dialog so you can see the effect the changes have on the image. Once you are satisfied, click Apply to confirm your changes and they will be applied to the image itself in the Job window.
Note that by default, Tune is only available for raster image file types such as JPG, PNG, TIFF, but not for vector based formats such as EPS and PDF. For vector/Postscript formats, the Tune options is not displayed. To enable Tune for EPS and PDF files, see the Using Tune with EPS and PDF files section at the bottom of this article.
The different settings available in Tune are:
Adjust the saturation of the image by turning the dial to the right (Increase saturation) or to the left (Decrease saturation). You may also adjust the saturation by using the + (More saturation) and – (Less saturation) icons or numericaly by using the number box below the dial. The green arrow button resets the adjustment to 0/no adjustment.
Adjust brightness and contrast using the top slider for brightness and the bottom for contrast. You can also adjust the values numerically using the number boxes to the right. The green arrow button resets the adjustments to 0/no adjustment.
Adjust color balance using the top slider for cyan/red balance, middle slider
for magenta/green balance and bottom slider for brightness and the bottom for
yellow/blue balance. You can also adjust the values numerically using the
number boxes to the right. The green arrow button resets the adjustments to
0/no adjustment.
All Equal sets the balance to the
balance of all channels equal, taking the next slider you click on as
reference.
The green arrow button resets the adjustments to 0/no adjustment.
Alters the color output of the image based on a gradation curve.
To the left of the actual gradation curve, you’ll see the channel setting. The selected channel sets which color channel the curve will affect (Top to bottom: All colors, red, green, blue). Select the channel you would like to adjust and change the curve as desired. You can alter all channels, just one channel, or each individually . The channels are mapped from 0/0 to 100/255.
The horizontal axis represents the theoretical channel density or input color shown numerically as In:. Think of this as the input density, i.e. the density for a channel that is defined in the file. The bottom left corner is zero or no density, the bottom right corner is the full or maximum density for the channel.
The vertical axis represents the output density of the channel shown numerically as Out:. The bottom right corner is zero or no density, the top right corner is the maximum density.
Using this graph lets us map an input density value to an output density, affecting the ink output in that channel. An easy example would be if we notice that a color channel applies too much ink. By adjusting the vertical endpoint to a lower value, e.g. 70%), we specify that the maximum available density (100% on the input/horizontal axis) may not exceed the 70% of the vertical axis. This maps 100% input density to 70% output density effectively limiting the density of the white channel to 70%, decreasing ink application in a linear fashion as a result.
The gradation curve also lets you specify additional points in the curve itself by clicking any point on the line and dragging it to the desired point. This allows for complex adjustments and non-linear density gain to match and customize printer and ink behavior.
While generally not recommended, it is possible to make Tune accessible for vector filetypes using legacy modes of the ErgoSoft RIP, reverting ColorManagement back to the state of previous versions. To use Legacy ColorManagement several settings are required.
For EPS: Select the EPS image in the Job view and go to Properties & Actions. Open ColorManagement PS/EPS. Change to custom settings and click the Edit button, or use the Add button to create a new Preset. In the Color Management Postscript/EPS window, uncheck the box at the top labeled Use Postscript/EPS Interpreter ColorManagement and confirm with Ok.
This
setting can also be set as default by turning off Use Postscript/EPS Interpreter ColorManagement in the application defaults in Tools >
Options/Color Management/Postscript/EPS and confirming with Ok.
Changing this in Tools > Options will take effect on the next job after the setting is made, not the current one.
For PDF: Access the Postscript/PDF Parameters dialog by right clicking on the image file in the JobComposer and selecting Renderer Options..., in the PostScipt/PDF Parameters window, set Interpreter for PDF Rendering to Legacy.
Next, select the PDF image in the Job view and go to Properties & Actions. Open ColorManagement PS/EPS. Change to custom settings and click the Edit button, or use the Add button to create a new Preset. In the Color Management Postscript/EPS window, uncheck the box at the top labeled Use Postscript/EPS Interpreter ColorManagement and confirm with Ok.
These settings can also be set as default by changing the Interpreter for PDF Rendering to legacy in Tools > Options > Postscript/PDF Parameter and by turning off Use Postscript/EPS Interpreter ColorManagement in the application defaults in Tools > Options > Color Management/PDF and confirming with Ok.
Changing this in Tools > Options will take effect on the next job after the setting is made, not the current one.
Using these settings will revert the RIP to an older version of Postscript Color Management used in previous version versions of the RIP. Please note that many Postscript ColorManagement options are not available in these older versions and there might be color changes compared to using the modern Postscript ColorManagement.