Loading ...
Loading ...
Loading ...
311
Modifying Lift, Gamma, and Gain
Using the primary corrector, you can achieve a refined result because you can divide the
image into tonal regions.
The lift, gamma, and gain controls broadly correspond to the dark, midrange, and bright
regions in the image. Within each region, you can adjust hue and luma values to create a
wide variety of styles. For instance, if you wanted to adjust color or brightness in the dark
areas, you would move the lift region.
Let’s make a few adjustments to get the feel of some of the primary corrector’s controls. In
this exercise we’ll use the color wheels controls.
1 In the timeline, click thumbnail 01 to relocate the play head to that clip.
The color wheels controls are divided into color wheels and master wheels. When
starting to color correct an image you start with the master wheels to set the dynamic
range between your black point and white point.
TIP Adjustments made in the color balance controls are subtle. In most cases,
the edge of the control will remain very close to or still touch the crosshair.
The master wheel controls, below the color balance controls, adjust brightness in the
lift, gamma, and gain regions. Adjusting the lift wheel will increase or decrease
brightness in the darker areas.
2 Drag the lift wheel to the left until the Y luminance value reads around -0.05.
The master wheel under the lift color balance control adjusts the black point for the
image. When dragging it to the left, the darker areas in the image become darker.
Let’s look at the other end of the spectrum by adjusting the gain control.
The master wheel under the gain color balance control adjusts the white point for the
image. When dragging it to the right, the brightest areas in the image become brighter.
3 Drag the gain master wheel to the right until the Y luminance value displays around 1.5.
By adjusting the lift master wheel and the gain master wheel, you have effectively
adjusted contrast in the clip. Instead of using a simple contrast control, you have
exercised greater control over the black point and white point using the lift and gain
master wheels.
Now let’s look at gamma.
Loading ...
Loading ...
Loading ...