User Manual

NOTE: The controls are independent for each color range. For example, adjusting the
Gamma control while in Shadows mode does not change or affect the value of the
Gamma control for the Highlights mode. Each control is independent and applied
separately.
Color Wheel
The color wheel provides a visual representation of adjustments made to Hue and Saturation,
as well as any tinting applied to the image. Adjustments can be made directly by dragging the
color indicator, or by entering values in the numeric boxes under the color wheel.
The tinting is represented in the color wheel color indicator that shows the color and strength of
the tint. The Highlight setting uses a black outline for the color indicator. The Midtones and
Shadows use gray color indicators. The Master color indicator is also black, but it has a white
M in the center to distinguish it from the others.
The mouse can position the color indicator for each range only when the applicable range is
selected. For example, the Highlight color indicator cannot be moved when the Master range
is selected.
Holding down the Command or Ctrl key while dragging this indicator allows you to make finer
adjustments by reducing the control’s sensitivity to mouse movements. Holding down the Shift
key limits the movement of the color indicator to a single axis, allowing you to restrict the effect
to either tint or strength.
Tint Mode
This menu is used to select the speed and quality of the algorithm used to apply the hue and
saturation adjustments. The default is Better, but for working with larger images, it may be
desirable to use a faster method.
Hue
This slider is a clone of the Hue control located under the color wheel. The slider makes it
easier to make small adjustments to the value with the mouse. The Hue control provides a
method of shifting the hue of the image (or selected color range) through the color spectrum.
The control value has an effective range between -0.1 and 1.0, which represents the angle of
rotation in a clockwise direction. A value of 0.25 would be 90 degrees (90/360) and would
have the effect of shifting red toward blue, green to red, and so on.
Hue shifting can be done by dragging the slider, entering a value directly into the text control,
or by placing the mouse above the outer ring of the color wheel and dragging the mouse up or
down. The outer ring always shows the shifted colors compared to the original colors shown in
the center of the wheel.
Saturation
This slider is a clone of the Saturation control located under the color wheel. The slider makes it
easier to make small adjustments to the value with the mouse. The Saturation control is used to
adjust the intensity of the color values. A saturation of 0 produces gray pixels without any color
component, whereas a value of 1.0 produces no change in the chroma component of the input
image. Higher values generate oversaturated values with a high color component.
Saturation values can be set by dragging the slider, entering a value directly into the text control,
or by dragging the mouse to the left and right on the outer ring of the color wheel control.
Channel
This menu is set for the Histogram, Color, and Levels sections of the Color Corrector node.
When the red channel is selected, the controls in each mode affect the red channel only,
and so on.
Chapter – 85 Color Nodes 1858