- 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
Applying content-aware scaling
The Content-Aware Scale feature is smart enough to resize parts of a photo that it deems to be neutral, or of lesser importance, without distorting key areas, such as figures, buildings, or prominent objects. It comes in handy if you want to change the proportions of a photo to fit a specific layout or to improve the overall composition.
To apply content-aware scaling:
- Open a photo.A Press Ctrl-J/Cmd-J to duplicate the Background. Leave the duplicate layer selected and hide the Background.
- Choose Edit > Content-Aware Scale (Ctrl-Alt-Shift-C/Cmd-Option-Shift-C).
- Drag a center handle on the bounding border. Nonessential areas are scaled first.B If you keep dragging, eventually more essential areas are also scaled; if this occurs, drag back in the opposite direction.
- To accept the scaling, double-click the image or press Enter/Return (A–C, next page). Or to cancel it, press Esc.
- To protect an area from scaling, select it, choose Select > Save Selection, click OK, then deselect. Choose Edit > Content-Aware Scale, then choose Alpha 1 from the Protect menu on the Options bar.
A We moved the imagery upward on its layer. To limit our next round of content-aware scaling to the foreground shapes at the bottom of the image, we created a selection with the Rectangular Marquee tool.
B When we chose Content-Aware Scale, the bounding border surrounded only the selected area. We dragged the bottom center handle downward. This time, the scaling primarily affected the grasses in the midground, and produced the result at left. (Had we not created a selection first, the neutral sky area would also have been scaled.)
C As an additional option, before accepting the Content-Aware Scale edit, we lowered the Amount value (Options bar) to 51%. This changed the result to a blend of content-aware scaling and normal Free Transform scaling. Specifically, the scaling is now affecting the foreground more than the midground. Satisfied with the result, we accepted the edit by double-clicking the image.