Adobe PHOTOSHOP 6.0 Manual page 318

CHAPTER 11
308
Creating Animations (ImageReady)
Setting the frame disposal method
The frame disposal method specifies whether to
discard the current frame before displaying the
next frame. You select a disposal method when
working with animations that include background
transparency in order to specify whether the
current frame will be visible through the trans-
parent areas of the next frame.
A
B
A. Frame with background transparency with Restore to
Background option B. Frame with background transparency
with Do Not Dispose option
The Disposal Method icon indicates whether the
frame is set to Do Not Dispose ( ) or Restore to
Background ( ). (No icon appears when disposal
method is set to Automatic.)
To choose a disposal method:
Select a frame or frames for which you want to
1
choose a disposal method.
2 Right-click (Windows) or Ctrl-click (Mac OS)
the frame thumbnail to view the Disposal Method
context menu.
3 Choose a disposal method:
Automatic to determine a disposal method for
•
the current frame automatically, discarding the
current frame if the next frame contains layer
transparency. For most animations, the Automatic
option yields the desired results and is, therefore,
the default option.
Note: Choose the Automatic disposal option when
using the Redundant Pixel Removal optimization
option, to enable ImageReady to preserve frames that
include transparency.
Do Not Dispose to preserve the current frame as
•
the next frame is added to the display. The current
frame (and preceding frames) may show through
transparent areas of the next frame. To accurately
preview an animation using the Do Not Dispose
option, preview the animation in a browser.
Restore to Background to discard the current
•
frame from the display before the next frame is
displayed. Only a single frame is displayed at any
time (and the current frame will not appear
through the transparent areas of the next frame).
Flattening frames into layers
You can flatten animation frames into layers.
A single, composite layer is created for each
frame, containing all of the layers in the frame.
The original layers in the frame are hidden but
preserved (the original layers will be available if
they are needed for another frame).
Note: If you save an animation as a GIF, the
animation frames are flattened and the original
layers are lost. You should save the original file in
Photoshop file format to preserve layers for reediting.