Adobe AFTER EFFECTS CS3 PROFESSIONAL User Manual page 250

Similarly, colors in a composition sent to Adobe Premiere Pro or Encore using Dynamic Link are in the After Effects
project's working color space. To manage colors in a dynamically linked composition, create a new composition and
nest your composition within it; then apply the Color Profile Converter effect to the containing composition, with
Input Profile set to Project Working Space.
See also
"About color spaces" on page 239
"Set the color depth" on page 234
Linearize working space and enable linear blending
If you have enabled color management (by specifying a working color space), you can perform all color operations
in linear light by linearizing the working color space. A linearized color space uses the same primaries and white
point as the nonlinear version; it just doesn't use a tone response curve. (See "About gamma and tone response" on
page 239.)
If you have not enabled color management, you can still perform blending operations using a gamma of 1.0.
By performing operations in a linear color space, you can prevent certain edge and halo artifacts, such as the fringing
that appears when high-contrast, saturated colors are blended together. Many color operations benefit from working
in a linear color space, including those involved in image re-sampling, blending between layers with blending modes,
motion blur, and anti-aliasing.
If you want to use a linearized working color space, do so when you set up the project, instead of switching later.
Otherwise, colors chosen in the color picker will change when you switch to a linear working color space, because
colors inside After Effects are interpreted to be in the working color space.
Note: A linearized working color space works best with higher color depths, 16 bpc and 32 bpc, and is not recommended
for 8 bpc color.
❖
Choose File > Project Settings, and do one of the following:
• To linearize the working color space, choose Linearize Working Space.
• To blend colors in a linear color space, choose Blend Colors Using 1.0 Gamma. This affects only blending modes.
See also
"Blending modes" on page 166
Interpret a footage item by assigning an input color profile
You control color management for each footage item using the Interpret Footage dialog box.
You can prevent the conversion of colors into the working color space for a single footage item by selecting Preserve
RGB in the Color Management tab of the Interpret Footage dialog box. This option preserves RGB numbers; color
appearance is not preserved. Turning off color management for a specific footage item is useful when the footage item
is not intended for visual display, but is instead intended for use as a control layer—for example, a displacement map.
The input color profile determines what calculations are performed when converting the footage item's colors into
the project's working color space. If a working space has not been set—that is, if color management is not on for the
project—then you cannot assign an input color profile.
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User Guide