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Only recently I have noticed that the clone stamp tool's behaviour seems to have changed, because the cloned area now appears to display a negative or inverted colour version of the sampled area, whereas it just used to show the sampled pixels. Choose an opacity of, say, 30% and, as the stamp is applied by left-clicking, it clones pixels from the sample area OK but, as the cloning builds up, the interior of the tool gradually darkens, so you can't really see what you're doing.
In the example below I've got a tool of 175px with a hardness of 30% and I Alt-clicked the target on the house's doorway. The screen shot shows the tool's appearance, which looks like a negative of the sampled area.
Is this behaving correctly, or has there been a change to Photoshop, or do I perhaps have a graphics driver problem?
Any assistance would be greatly appreciated, thanks.
Go to Window>Clone Source and make sure Normal is the blend mode and Invert is not checked.
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This second screenshot shows the same image after applying the stamp six or seven times, then moving the tool upwards, away from the cloned area. Cloning has taken place properly but the tool still shows a negative image of the sampled area and if it's moved over the cloned area it darkens and obscures the previous cloning.
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Go to Window>Clone Source and make sure Normal is the blend mode and Invert is not checked.
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Thanks very much, Jeff.
I thought it had to be something simple like that but hadn't noticed that blend mode was set to Difference.
Doh!