- Using the main application features
- Using the panels
- Tools on the Tools panel
- Changing the image size
- Choosing a bits per channel mode
- Cropping and rotating images
- Using the Layers panel
- Creating adjustment layers
- Editing adjustment layers
- Limiting the effect of an adjustment layer
- Saving adjustment presets
- Merging and deleting adjustment layers
- Working with layer groups
- Applying content-aware scaling
- Choosing a mode for the History panel
- Making snapshots of history states
- Working with nonlinear histories
- Using presets
- Streamlining your workflow
Working with nonlinear histories
The History panel’s nonlinear mode gives you the flexibility to go back to prior edit states without losing any of the recent edit states. In this exercise, you’ll set the History panel to nonlinear mode, create three different edit states, and then go back and compare the three states. This way, you won’t have to create a lot of duplicate or merged layers in order to compare your edits.
To compare history edits in nonlinear mode:
- Choose History Options from the History panel menu, check Allow Non-Linear History, then click OK.
- Perform an edit in your document, then click the state prior to that edit.A–D
- Create a new edit or a variation of the first one. Again, click the state prior to the first edit to restore the document to its preedited state (A–D, next page, and A–B, page 110).
- Create a third edit. All three edits will be listed on the History panel. Click each edit state to compare them, click the one you prefer, and continue working on your document.