Rendering Intents; Grow Bounds Effect - Adobe AFTER EFFECTS 7.0 Manual

ADOBE AFTER EFFECTS 7.0 552
User Guide
See also
"Color management" on page 64

Rendering intents

Rendering intent options determine how source colors are adjusted. For example, colors that fall inside the desti-
nation gamut may remain unchanged, or they may be adjusted to preserve the original range of visual relationships
when translated to a smaller destination gamut.
The result of choosing a rendering intent depends on the graphical content of an image and on the profiles used to
specify color spaces. Some profiles produce identical results for different rendering intents.
When specifying a rendering intent, you can choose to use black point compression. Black point compression
ensures that the shadow detail in the image is preserved by simulating the full dynamic range of the output device.
The following rendering intents are available for the Color Profile Converter effect:
Attempts to preserve the visual relationship between colors so it's perceived as natural to the human eye,
Perceptual
even though the color values themselves may change. This intent is suitable for images with many of out-of-gamut
colors.
Attempts to produce vivid colors in an image at the expense of color accuracy. This rendering intent is
Saturation
suitable for images, such as graphic logos, in which bright saturated colors are more important than the exact
relationship between colors.
Compares the extreme highlight of the source color space to that of the destination color
Relative Colorimetric
space and shifts all colors accordingly. Out-of-gamut colors are shifted to the closest reproducible color in the desti-
nation color space. This rendering intent preserves more of the original colors in an image than Perceptual. This is
the default, and is the rendering intent used by default throughout After Effects.
Leaves colors that fall inside the destination gamut unchanged. Out-of-gamut colors are
Absolute Colorimetric
clipped. No scaling of colors to the destination white point is performed. This intent aims to maintain color accuracy
at the expense of preserving relationships between colors.
See also
"Color management" on page 64

Grow Bounds effect

The Grow Bounds effect increases the layer size for the effect that directly follows this effect. It is most useful with
layers with Collapse Transformations/Continuously Rasterize enabled, because they render using a buffer that is the
size of the composition. For example, if you apply Drop Shadow to a Text layer that is partially off the composition,
the shadow will be clipped because only the portion of the text that is in the composition will cast a shadow. Applying
the Grow Bounds effect before the Drop Shadow effect prevents the shadow from being cut off. The number of pixels
you specify increases the height and width of the layer's buffer.
This effect works with 8-bpc, 16-bpc, and 32-bpc color.