Equalize Effect; Exposure Effect; To Use Arbitrary Map In The Curves Effect; To Use The Exposure Effect - Adobe AFTER EFFECTS 7.0 Manual

To use Arbitrary Map in the Curves effect

Use Arbitrary Map to draw a tonal curve by dragging. This control helps you create a variety of interesting tonal and
color effects. In addition, you can import curves and arbitrary maps from Adobe Photoshop. Curves supports .amp
files (Windows) and Photoshop lookup files (Mac OS) created by using the Pencil tool, and .acv files (Windows) and
Photoshop spline files (Mac OS) created by using the Graph tool. The Curves effect does not support Adobe
Photoshop color tables (.act).
Click the Folder icon to locate and open an existing map, or click the Pencil tool to edit the default curve.
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Draw or edit the curve in the Curves graph.
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3 If desired, click Smooth

Equalize effect

The Equalize effect alters an image's pixel values to produce a more consistent brightness or color component distri-
bution. The effect works similarly to the Equalize command in Adobe Photoshop. Equalization can be performed
using either RGB values or the brightness component. Pixels with 0 alpha (completely transparent) values are not
considered, so masked layers are equalized based on the mask area. Layer quality settings do not affect Equalize.
This effect works with 8-bpc color.
Original (left), and with effect applied (right)
Specifies which equalization method to use. RGB equalizes the image based on red, green, and blue compo-
Equalize
nents. Brightness equalizes the image based on the brightness of each pixel. Photoshop Style equalizes by redistrib-
uting the brightness values of the pixels in an image so that they more evenly represent the entire range of brightness
levels.
Specifies how much to redistribute the brightness values. At 100%, the pixel values are spread
Amount To Equalize
as evenly as possible, while lower percentages redistribute fewer pixel values.

Exposure effect

Use the Exposure effect to make tonal adjustments to footage, either one channel at a time, or to all channels at once.
The Exposure effect simulates the result of modifying the exposure setting (in f-stops) of the camera that captured
the image. The Exposure effect works by performing calculations in a linear color space, rather than in the image's
current color space. The Exposure effect is designed for making tonal adjustments to high-dynamic-range images
with 32-bpc color, but you can use the effect on 8-bpc and 16-bpc images.
See also
"High dynamic range footage (Pro only)" on page 62

To use the Exposure effect

Select the layer that you want to adjust, and choose Effect > Color Correction > Exposure.
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to smooth the curve or click Line to reset the curve.
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User Guide