Quick links to procedures on this page:
You can use a selection when sampling an image area in two ways: by making brushstrokes in the destination image obey the selection in the sample source image, or by copying the active selection in the sample source region. These two options can be used individually or together.
These selection options require a Cloning method. They do not work for brushes of other methods that use the Clone Color button 
on the Color panel.
Use Obey Source Selection to paint in the area that corresponds to the source selection.
Use Copy Source Selection to sample both the selection and the color.
| 4 . |
In the Cloning panel (Window  Clone Source), enable the Clone Color check box. |
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Obey Source Selection — respects the content of the active sample source selection. When you paint in the destination, the brushstrokes are constrained to a region that corresponds to the sample source selection. For sampling types that apply a transformation, the selection is transformed. |
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Copy Source Selection — copies the active selection in the source region. When you paint in the destination, your brushstrokes sample the selection’s pixels as well as the RGB pixels. For sampling types that apply a transformation, the copied selection is transformed. Copy Source Selection is often used together with Obey Source Selection. |
| 6 . |
Hold down Option (macOS) or Alt (Windows), and click to set the sample source reference points. |
| 7 . |
Hold down Option + Shift (macOS) or Alt + Shift (Windows), and click to set the destination reference points. |
This image uses Rotate & Scale sampling with both Obey Source Selection and Copy Source Selection enabled.
. For information about setting up a selection, see Creating path-based selections.
in the toolbox.
