User Manual

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Adjusting Tone Ranges in Log Mode
Two parameters let you modify the range of Shadows and Highlights that each Color Balance
control affects, in turn narrowing and widening the range of Midtones. Keep in mind that while
the ranges can be customized, the amount of overlap between each range cannot.
Low Range: Moves the border where the Shadows and Midtones meet. Lowering
this parameter widens the range affected by the Midtones, and narrows the range
affected by the Shadows. Raising this parameter narrows the Midtones and widens the
Shadows.
High Range: Moves the border where the Midtones and Highlights meet. Lowering the
High Range parameter narrows the range affected by the Midtones, and widens the
range affected by the Highlights. Raising this parameter narrows the Highlights and
widens the Midtones.
There are also Saturation and Hue parameters which mimic these settings found within other
palettes and modes.
Adjusting Contrast in Log Mode
When using the Log mode controls, your primary tools for adjusting image contrast will usually
be the Offset master wheel and Contrast and Pivot parameters. Using these three controls, you
can set a black point and adjust the overall contrast very quickly.
The Shadow, Midtone, and Highlight master wheels let you adjust image lightness within the
same restrictive ranges of image tonality that are defined by the Low Range, High Range, and
Pivot parameters. These adjustments should appear smooth, if somewhat narrower then the
Lift/Gamma/Gain controls, when used with log-encoded media. However, when used with
normalized images, severe adjustments made with one master wheel may not always make a
smooth transition to the next adjacent range of image lightness.
NOTE: Because these controls are so restrictive when used with normalized images,
it’s easy to create solarization effects by raising the shadows to be higher than the
Midtones, or lowering the Highlights to fall below the Midtones, to give two examples.
Log Oset Color and Master Controls
The Log controls also share the same Offset color balance and Master Wheel controls that
appear in the Lift/Gamma/Gain mode of the Color Wheels palette (which are tied to the Offset
controls of the Primaries palette).
The Offset color balance control: Works as a simultaneous adjustment to all three
Offset sliders located in the Primaries palette; adjustments made to the Offset color
balance control also alter the Offset sliders. Used subtly, this makes it easy to neutralize
color imbalances in the darkest part of the image, while simultaneously rebalancing
every other part of the image. Used more dramatically, this control makes it easy to add
a color wash throughout the entire image.
The Offset wheel: Acts as a global adjustment to image lightness, an operation
sometimes referred to as setup, raising or lowering all YRGB channels together.
Chapter – 117 Primary Grading Controls 2662