< Previous | Contents | Next >
Adjusting the Default Tone Ranges in Log Mode
When in Log mode, two additional parameters appear in the top shared controls bar that let you modify the range of Shadows and Highlights image tonality 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.
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.
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.
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.
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.
Log Offset Color and Master Controls
The Log controls share the same Offset color balance and Master Wheel controls that appear in the Lift/Gamma/Gain mode of the Wheels and Bars controls. The Offset controls are in fact processed as part of the Log controls, but for convenience they’re presented with the Wheels controls because they’re so useful.
— 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.