User Manual

Hue Tab
Use the Hue tab of the Color Gain node to shift the overall hue of the image, without affecting
the brightness, or saturation. Independent controls of the High, Mid, and Dark ranges are
offered by three sliders.
The following is the order of the hues in the RGB color space: Red, Yellow, Green, Cyan, Blue,
Magenta and Red.
High/Mid/Dark Hue
Values above 0 push the hue of the image toward the right (red turns yellow). Values below 0
push the hue toward the left (red turns magenta). At -1.0 or 1.0, the hue completes the cycle and
returns to its original value.
The default range of the hue sliders is -1.0 to +1.0. Values outside this range can be
entered manually.
Ranges Tab
The Ranges tab contains the controls used to specify which pixels in an image are considered
to be shadows and which are considered to be highlights. The midrange is always calculated as
pixels not included in either the shadows or the highlights.
Spline Display
The ranges are selected by manipulating the spline handles. There are four spline points, each
with one Bézier handle. The two handles at the top represent the start of the shadow and
highlight ranges, whereas the two at the bottom represent the end of the range. The Bézier
handles are used to control the falloff.
The midtones range has no specific controls since its range is understood to be the space
between the shadow and the highlight ranges. The X and Y text controls below the Spline
display can be used to enter precise positions for the selected Bézier point or handle.
Chapter – 85 Color Nodes 1873