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This tool offers you a collection of unified filters to treat the image.
Of course, same functions can be performed by particular filters, but
you have here an interesting, intuitive, overview.
8.35.2.
Activate the filter
You can find this filter in the image window menu under
→ .
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Original and Current previews
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Two previews display respectively before treatment and after
treatment images.
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Show
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Sets what you want to preview:
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Windows
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You can choose between:
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Hue
makes one preview for each of the three primary colors and the
three complementary colors of the RGB color model. By clicking
successively on a color, you add to this color into the
affected range, according to Roughness. To subtract color,
click on the opposite color, the complementary color.
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Saturation: Three previews for more or
less saturation.
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Value: Three previews for more or less
luminosity.
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Advanced: developed later.
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Affected range
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Allows you to set which brightness you want to work with.
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Shadows: dark tones.
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Midtones
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Highlights: bright tones
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Select pixels by
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Determines what HSV channel the selected range will affect. You
can choose between:
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Roughness
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This slider sets how image will change when you click on a
window: taking a short step or a large one (0 - 1).
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Advanced Options
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These advanced options let you work more precisely on the changes
applied to the image and on the preview size.
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Preview Size
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Something like a zoom on previews. Normal size is 80.
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Tip |
In spite of Preview Size option, this size is often too
small. You can compensate this by working on an enlarged
selection, for instance a face on a photo. Then, you
invert selection to work on the other part of the image.
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Affected range
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Here, you can set the tone range that the filter will
affect.
The curve in this window represents the importance of the
changes applied to the image. The aspect of this curve
depends on the Affected range you have selected: Shadows,
Midtons or Highlights. You can set the curve amplitude by
using the Roughness
slider in the main window of the filter.
By using the available controls (slider and triangles),
you can precisely set the form of this action curve.
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