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Chapter 8. The Digital Darkroom: Photogr... > Why Use Adjustment Layers?

Why Use Adjustment Layers?

Whenever you apply a Curves or Levels tweak (or even a Hue/Saturation adjustment) to an image, you're degrading it a little by throwing away some image data. Once that data is gone, you can't get it back. In the digital darkroom, this degradation is no longer an issue because you make edits to layers above the image rather than to the image itself.


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