Adobe Premiere Elements 12 - Manual (Page 158)

output channel. Alternatively, 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 Applied Effects button, 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.
154