Adobe Premiere Pro CS4 - Manual (Page 374)

368 USING ADOBE PREMIERE PRO CS4
Effects and transitions
Last updated 11/6/2011
Contrast/Sharpness Specifies the contrast of the cell pattern when you use the Bubbles, Crystals, Pillow, Mixed
Crystals, or Tubular cell pattern. The control specifies sharpness for any of the Plate or Crystallize options.
Note: The contrast is affected by the option chosen in the Overflow menu.
Overflow How the effect remaps values that fall outside the grayscale range of 0-255. Overflow isn’t available if
sharpness-based cell patterns are chosen.
• Clip Values above 255 are mapped to 255. Values below 0 are mapped to 0. Contrast amount controls how much
of the image falls outside the range 0-255; higher contrast amounts result in a mostly black or white image, with less
gray. Therefore, less subtle cellular detail appears at higher contrast settings.
• Soft Clamp Remaps grayscale values to fall inside the 0–255 range. Contrast appears reduced; cells are mostly gray
with very few areas of pure black or white.
• Wrap Back Values above 255 or below 0 are reflected back into the 0-255 range. For example, a value of 258 (255+3)
is reflected to 252 (255-3), and a value of -3 is reflected to 3. With this setting, Contrast values above 100 increase
complexity and detail.
Disperse How randomly the pattern is drawn. Lower values cause more uniform or grid-like cell patterns.
Size The size of the cells. The default size is 60.
Offset Determines the portion of the cell pattern that is used.
Tiling Options Choose Enable Tiling to create a pattern built of repeating tiles. Cells Horizontal and Cells Vertical
determine how many cells wide and how many cells high each tile is.
Evolution Animating this setting results in changes of the pattern over time.
Note: Although the Evolution value is set in units called revolutions, it’s important to realize that these revolutions are
progressive. The evolution state continues to progress infinitely at each new value. Use the Cycle Evolution option to
return the Evolution setting to its original state at each revolution.
Evolution Options Provide controls that render the effect for one short cycle and then loop it for the duration of your
clip. Use these controls to prerender the cell pattern elements into loops, and thus speed up rendering time.
• Cycle Evolution Creates a loop that forces the evolution state to return to its starting point.
• Cycle The number of revolutions of the Evolution setting that the cell pattern cycles through before it repeats. The
timing of the Evolution cycles is determined by the amount of time between Evolution keyframes.
Note: The Cycle control affects only the state of the cell pattern, not geometrics or other controls, so you can get different
results with different Size or Offset settings.
• Random Seed Specifies a value from which to generate the cell pattern. Animating this property results in flashing
from one cell pattern to another within the same cell pattern type. For smooth transition of the cell pattern, use the
Evolution control.
Note: Create new cell pattern animations by reusing previously created Evolution cycles and changing only the Random
Seed value. Using a new Random Seed value alters the cell pattern without disturbing the evolution animation.
Checkerboard effect (Windows only)
(32-bit) The Checkerboard effect creates a checkerboard pattern of rectangles, half of which are transparent.