In the Separation column, you can manage the created separation, and add or eliminate separation colors. Each filter in the Filter Column uses an embedded curve, which you can modify. All modifications in curves and levels can be restored by the action 'Restore' next to each modification window (three lines).

Combine Separations

You can combine the separations filter by dragging a separation into another while pressing Shift.

Color Channel Groups 

Grouping the separation joins color separations in one group to be independent in the color mix with other channels, which allows different color combinations after separations.

Add/Remove Colors in Separation

Press Shift and color selector and click on the desired color to add it to the Separation window. For example, when creating an orange-separated channel.


And the yellow color from the original into the same channel, we see that in the HUE curve, the points in those color hue are added and also in the separation on the right. Use the keyboard combination Shift+Alt and click the color selector on the color you want to eliminate.

We can adjust the color curves for Hue, Saturation, and Levels either by moving the dots or drawing by hand. Adjust the curves within the selected points and drag them to the position you like. Beware that the color you are using must be "inside" the curve. The option to move the curves by hand is available the moment you add color to the separation.

Tolerance of color

The tolerance of color can be modified by increasing or lowering its value. By default, the value is 200. Lowering the above color separation tolerance to example 100 tolerance, the color selection will be reduced in the lower percentage in the separation. Increasing the same separation to example 300 tolerance, the lower percentage of the color selection will be filled.

Levels of Color Separation

Removing or adding input and output of the calculated grayscale of a channel is another way to modify a color separation. When we modify the curve, changes in the separation are applied.

Intensity and Mode

The Intensity is the gray intensity value of the filter separation. The Mode can be selected from different options in different modes (Addition, Mask, Selection, Plain ink mask, Plain ink selection) correspondent to the image file is in use in Adobe® Photoshop®. By default is an Addition and affects the original image shown visibly in nT Multicomia.

  • Intensity can be modified by increasing or lowering the percentage. By default, the value is 100%.


  • Lowering the filter intensity to example 50%, the color selection will be reduced allover in the separation and the result is the following:

  • Increasing the filter intensity to example 200%, the maximum, the color selection will be increased all over in the separation and the result is the following:


Related articles:

Getting Started with nT Multicomia