Adobe Premiere Elements 8 - Manual (Page 177)

172 USING ADOBE PREMIERE ELEMENTS 8 EDITOR
Applying effects
Last updated 8/12/2010
Mix Channels in a clip
1 Apply the Channel Mixer effect, and then click the Edit Effects button in the Tasks panel. Expand the Channel
Mixer effect and drag any channel’s value to the left to decrease the channel’s contribution to the output channel
and to the right to increase it. Or, click an underlined value, type a value between -200 and +200 in the value box,
and press Enter. Using a negative value inverts the source channel before adding it to the output channel.
2 (Optional) Drag or type a value for the channel’s constant value. This value adds a base amount of a channel to the
output channel.
3 (Optional) Select Monochrome to apply the same settings to all the output channels, creating a clip that contains
only gray values.
4 Click Done.
Extract
The Extract effect removes colors from a video clip or still image, creating a textured grayscale appearance. Control
the clip’s appearance by specifying the range of gray levels to convert to white or black.
Specify Extract settings
1 Apply the effect.
2 Click the Edit Effects button in the Tasks panel, and then click the Setup button to the right of the effect name.
3 In the Extract Settings dialog box, drag the two triangles underneath the histogram (a diagram showing the number
of pixels at each brightness level in the current keyframe) to specify the range of pixels converted to white or black.
Pixels between the triangles are converted to white. All other pixels are converted to black.
4 Drag the softness slider to introduce levels of gray into the pixels that have been converted to white. Higher softness
values produce more gray.
5 (Optional) Select Invert to reverse the range that is converted to white and black, and click OK.
6 Click Done.
Image Control
The Image Control effect emulates the controls of a video processing amplifier. This effect adjusts the brightness,
contrast, hue, and saturation of a clip.
Lighting Effects
The Lighting Effects effect applies creative lighting effects on a clip with up to five lights. You can control lighting
properties such as lighting type, direction, intensity, color, lighting center, and lighting spread. Use the Bump Layer
control to use textures or patterns from other clips to produce special lighting effects, such as a 3D-like surface effect.
Posterize
The Posterize effect specifies the number of tonal levels (or brightness values) for each channel in a clip and maps
pixels to the closest matching level. For example, if you choose two tonal levels in an RGB clip, you get two tones for
red, two tones for green, and two tones for blue. Values range from 2 to 255. Although the results of this effect are most
evident when you reduce the number of gray levels in a grayscale clip, Posterize also produces interesting effects in
color clips.
Use Level to adjust the number of tonal levels for each channel to which Posterize will map existing colors.