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Changes in hue rotate the original color
values though a color space and reas-
signs a new hue based on the new
position in that space. In this example,
the original image was rotated 180°. For
more on the hue, saturation, and bright-
ness palette, see page 56.
Two color spaces are displayed at the
bottom of the palette. The top bar indi-
cates the color space of the original
image. The bottom bar displays the rela-
tive shift to the Original color space. In
the example, the reds have been shifted
to green and the yellows to lavender.
Original color space
New color space
Selective-color palette
Before
In the original image, the colors were muted making the whole scene flat. By subtracting cyan
from the red channel, the bridge and faint details in the clouds could be accentuated. The cloud
detail was further enhanced by subtracting yellow from the blue channel. For more on the selec-
tive-color palette, see page 57.
Hue corrections
After
Saturation
Lightness
Hue
