Theme: Selective colour correction
Sel_colour
Q:

How do I use this dialogue?

A:

The separate color correction dialog is for alterations that should not effect the entire image but only a specific colour

first thing to do after this dialog appears is to click on the large SilverFast preview on that area with the colour you want to edit.
The dialog will consider this colour as the basis to work from. You can see this - for example - in the colour at the centre of the colour-wheel.

This window has three alternative modes for the same task!
No matter wheter you drag the mouse cursor from the centre point of the colour wheel to any of the outer points or simply hold-click at any of the arrows of the HSL-sliders or directly enter values into any box of the above table, you are doing the same thing!


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Q:

What is the difference between "color matrix 6" and "color matrix 12"?

A:

This refers on how fine should SilverFast distinguish colour tones. "Color Matrix 12" is the fine mode whereas "Color Matrix 6" is the coarse mode, if you want to put it like this.


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Q:

How do I use the 'Mask' function in the separate colour correction?

A:

The "Separate Color Correction" tool houses the possibility to limit not only the colour to be changed but also the region of the image where these changes should take effect. This is realized with the help of masks which frame the area of interest.

The advantage: if the same colour appears on/in another object/area in the same image the chosen corrections for that colour will not effect the part of the image which is not framed.

However, if you want to have the same effect in two different parts of one image, SilverFast lets you copy the changes inside a mask to a newly drawn mask (around the other object with same colours) by simply holding down the shift-key on your keyboard while framing the next area inside your scan frame.
- select "new mask / change mask"
- position the mouse cursor at that point over the preview where you want to start drawing the mask.
- Hold down mouse button and draw mask.

When the object is framed, release mouse button and a prompt appears. You can give your mask a name.
- O.K. that box and start applying your colour corrections with either of the tools in the "Selective Color Correction" Window.

Once the corrections are to your satisfaction you simply hold down the SHIFT-key on your keyboard an start drawing a new mask around another part of the image. When the object is framed the corrections of the first mask will apply automatically to this new mask.

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