Adobe 65021048 User Guide - Page 284

ADOBE PREMIERE PRO CS3 278 User Guide Exposure Increases (positive values) or decreases (negative values) the light's brightness. A value of 0 is the default brightness of the light. 9 (Optional) Repeat steps 3 - 7 to add more lights (Light 2 - Light 5). 10 (Optional) If you added a clip to use as a bump layer (Lighting Effects texture), choose the track containing the bump layer clip from the Bump Layer pop-up menu. Use the controls to adjust the properties for the bump layer. See also "Apply Lighting Effects textures" on page 278 "Adjust position, scale, and rotation" on page 251 Apply Lighting Effects textures A bump layer in the Lighting Effects lets you use the pattern or texture from a clip to control how light reflects off an image. Using a clip with textures like paper or water can create a 3D-like lighting effect. 1 Add the clip you want to use as a bump layer (texture) to a separate track in your sequence. 2 Click the Toggle Track Output icon to hide the track containing the bump layer clip. 3 Add the Lighting Effects to a clip in the same sequence. 4 In the Effect Controls panel, click the triangle to expand the Lighting Effects. 5 (Optional) Click the triangle next to Light 1 to adjust the light's properties. 6 Choose the video track containing the bump layer from the Bump Layer menu. 7 From the Bump Channel menu, specify whether to use the bump layer clip's red, green, blue, or alpha channel to create the lighting effects texture. 8 Select the White Is High option to raise the white parts of the channel from the surface. Deselect this option to raise the dark parts. 9 Scrub the underlined text to specify the Bump Height value from flat (0) to mountainous (100). Vectorscope and waveform monitors About the vectorscope and waveform monitors Adobe Premiere Pro has a vectorscope and waveform monitors (YC Waveform, YCbCr Parade, and RGB Parade) to help you output a video program that meets broadcast standards and also assist you in making adjustments based on aesthetic considerations, such as color corrections. For decades, video production and duplication facilities have used waveform monitors and vectorscopes to accurately evaluate video levels-specifically, color and brightness. A vectorscope measures the chrominance (color components) of a video signal, including hue and saturation. A vectorscope maps a video's color information onto a circular chart. The traditional waveform monitor is useful in measuring the brightness, or luminance component, of a video signal. In Adobe Premiere Pro, the waveform monitors can also display chrominance information. The waveform monitor works something like a graph. The horizontal axis of the graph corresponds to the video image from left to right. Vertically, the waveform displays the luminance levels, and optionally, the chrominance levels. April 1, 2008