Adjustment Layers

You can apply the basic adjustments to your background image directly by using the individual adjustment tools; these are found under the Image>Adjustments sub menu. These tools apply their adjustments to an image. Once the adjustment is applied and the image changed; these changes are irrevocable.

You can also apply the same adjustment tools using adjustment layers. These act as filters over your image to apply the adjustments as the image is viewed (or printed), but do not actually alter the underlying image. The adjustment layers can be created under the New Adjustment Layer sub menu. Many of the adjustment options available under Image>Adjustments have a corresponding adjustment layer available under Layer>New Adjustment Layer.

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