Adobe After Effects - Manual (Page 630)

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Auto Amounts
Shadow Amount
Highlight Amount
Temporal Smoothing
Scene Detect
Blend With Original
Even though Selective Color uses CMYK colors to adjust an image, you can use it on RGB images.
This effect works with 8-bpc and 16-bpc color.
Choose from one of two values from the Method menu:
Relative
Changes the existing amount of cyan, magenta, yellow, or black by its percentage of the total. For example, if you start with a pixel that is 50%
magenta and add 10%, 5% is added to the magenta (10% of 50% = 5%) for a total of 55% magenta. (This option cannot adjust pure specular
white, which contains no color components.)
Absolute
Adjusts the color in absolute values. For example, if you start with a pixel that is 50% magenta and add 10%, the magenta ink is set to a total of
60%.
The adjustment is based on how close a color is to one of the options in the Colors menu. For example, 50% magenta is midway between
white and pure magenta and receives a proportionate mix of corrections defined for the two colors.
The color that is affected is the color chosen in the Colors menu.
The Details property group provides an alternate interface for adjusting colors and matches the properties shown in the Timeline panel.
Shadow/Highlight effect
The Shadow/Highlight effect brightens shadowed subjects in an image and reduces the highlights in an image. This effect doesn’t darken or
lighten an entire image; it adjusts the shadows and highlights independently, based on the surrounding pixels. You can also adjust the overall
contrast of an image. The default settings are for fixing images with backlighting problems.
This effect works with 8-bpc and 16-bpc color.
Original (left), and with effect applied (right)
If this option is selected, the Shadow Amount and Highlight Amount values are ignored, and amounts are used that are
automatically determined to be appropriate for lightening and restoring detail to the shadows. Selecting this option also activates the Temporal
Smoothing control.
The amount to lighten shadows in the image. This control is active only if you deselect Auto Amounts.
The amount to darken highlights in the image. This control is active only if you deselect Auto Amounts.
The range of adjacent frames, in seconds, analyzed to determine the amount of correction needed for each frame, relative
to its surrounding frames. If Temporal Smoothing is 0, each frame is analyzed independently, without regard for surrounding frames. Temporal
Smoothing can result in smoother-looking corrections over time.
If this option is selected, frames beyond a scene change are ignored when surrounding frames are analyzed for temporal
smoothing.
The transparency of the effect. The result of the effect is blended with the original image, with the effect result composited
on top. The higher you set this value, the less the effect affects the clip. For example, if you set this value to 100%, the effect has no visible result
on the clip; if you set this value to 0%, the original image doesn’t show through.
Expand the More Options category to reveal the following controls:
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