Working with the postprocessing pane
The postprocessing pane provides controls for fine-tuning an image after
coarser changes have been made with the thumbs
pane. Familiarity with these controls is essential to mastering
tintii.
- Decay thresholds the effect of saturation and lightness
adjustments made in the thumbs pane according to
the saturation of individual pixels. Increasing this slider will tend to
eliminate colour from areas where it is not wanted. Increasing or decreasing
the slider will tend to fine tune the edge around objects highlighted via
the thumbs pane controls.
- Edge controls the contrast of the Decay effect. Moving the
slider to the left tends to sharpen edges, while to the right tends to
soften them. This is particularly useful for controlling highlighted objects
with difficult edges, such as hair, feathers and foliage.
- Hardness controls how thumbs pane
controls influence pixels in the image. At the hardest setting, all the way
to the right, each pixel is affected only by adjustments for the thumb that
most closely matches its colour. At the softest setting, all the way to the
left, each pixel is affected equally by all thumbs. In between, each pixel
is affected most greatly by the cluster which most closely matches its
colour, and to a lesser extent by all other clusters, according to how
closely they match its colour. This control is particularly useful when
working with smooth gradients, where too hard a setting may produce
undesirable edge artifacts.