Revert to a previous image state – Adobe Photoshop CS4 User Manual
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USING PHOTOSHOP CS4
Workspace
Last updated 1/10/2010
Photoshop History panel
A. Sets the source for the history brush B. Thumbnail of a snapshot C. History state D. History state slider
Keep the following in mind when using the History panel:
•
Program-wide changes, such as changes to panels, color settings, actions, and preferences, are not reflected in the
History panel, because they are not changes to a particular image.
•
By default, the History panel lists the previous 20 states. You can change the number of remembered states by
setting a preference. Older states are automatically deleted to free more memory for Photoshop. To keep a
particular state throughout your work session, make a snapshot of the state.
•
Once you close and reopen the document, all states and snapshots from the last working session are cleared from
the panel.
•
By default, a snapshot of the initial state of the document is displayed at the top of the panel.
•
States are added to the bottom of the list. That is, the oldest state is at the top of the list, the most recent one at the
bottom.
•
Each state is listed with the name of the tool or command used to change the image.
•
By default, when you select a state, the states below it are dimmed. This way you can easily see which changes will
be discarded if you continue working from the selected state.
•
By default, selecting a state and then changing the image eliminates all states that come after it.
•
If you select a state and then change the image, eliminating the states that came after, you can use the Undo
command to undo the last change and restore the eliminated states.
•
By default, deleting a state deletes that state and those that came after it. If you choose the Allow Non-Linear History
option, deleting a state deletes only that state.
Revert to a previous image state
❖
Do any of the following:
•
Click the name of the state.
•
Choose Step Forward or Step Backward from the History panel menu or the Edit menu to move to the next or
previous state.
A
B
C
D