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Analyze This Frame. Now, if you play through the clip, changes in contrast and color should be gone. This allows you to stabilize the color of the shot, even if dark objects move through the frame or the highlights change level. You can use the selection box to specifically analyze the part of the frame that has the unwanted exposure change, while ignoring the desirable exposure change.
Depending on what option you choose from the Region for Analysis pop-up menu, different additional options appear.
Analysis Region
If you choose “Selected Area” from the Region For Analysis pop-up, a rectangle in the viewer appears and you can control its position, scale, and size by clicking and dragging on its corners in the viewer. These on-screen controls let you transform the selection box that defines which part of the image is being analyzed.
Channels to Stabilize
Once you’ve analyzed the frame that represents the best contrast and color for that clip, the Channels to Stabilize controls let you choose how to make the correction. The What to Stabilize pop-up menu lets you choose between stabilizing White Balance and Brightness, or R, G, B Channels Separately.
— If you choose White Balance and Brightness, two checkboxes let you choose whether or not you want to include Stabilize White Balance and Stabilize Brightness independently from one another.
— If you choose R, G, B channels separately, three checkboxes appear letting for Stabilize Red, Green, and Blue Channel, so you can pick which particular channels you want to correct.
The Stabilize drop-down menu lets you choose how to make the correction, with the options Levels and Contrast, Offset, and Gain, each of which uses a different method to make the necessary correction, so if one method doesn’t work for the particular problem your clip is exhibiting, you can try the other methods to try and get a better result.
Captured Analysis Values
Once you’ve analyzed the frame, another set of parameters appear showing the captured analysis values upon which the automated correction is based, so that you can make manual adjustments
if necessary to improve the result. The parameters that are shown depend on the option you chose from the What to Stabilize pop-up menu.
— If you chose White Balance and Brightness, then you’ll have a Normalized White Balance color control, and Low Level and High Level sliders.
— If you chose R, G, B Channels Separately, then you’ll have Red, Green, and Blue High and Low Level sliders.