Blackmagic Design DaVinci Resolve Studio (Dongle) - Manual (Page 328)

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Modifying Lift, Gamma, and Gain
7 In the gamma color balance control, drag the control slightly toward magenta.
The gamma color balance control tints the midrange of your image.
Let’s compare the corrected image you’ve made to the original image.
8 Click the Bypass button in the upper right of the viewer or press Shift-D, to see the
original image. Then Click the Bypass button again, or press Shift-D, to view the
corrected image.
These adjustments were made only to give you a feel for the controls and what they
do. They clearly didn’t produce anything worth keeping. You can reset each control
or the entire primary corrector using the reset buttons.
NOTE In the color page, each clip has its own undo/redo history. That is,
choosing Edit > Undo will undo previous changes depending on which clip is
the current clip. The edit page also has its own undo history, which is separate
from the color page. The edit and Fairlight page Undo/Redo commands
operate on the entire timeline, not on each clip.