How do you create an Adjustment Layer, and why is it preferred over directly adjusting the layer's pixels?

How do you create an Adjustment Layer, and why is it preferred over directly adjusting the layer's pixels?

• A. Layer > New Adjustment Layer (e.g., Levels, Curves); adjustment layers are destructive.
• B. Edit > Apply Adjustment; it's non-destructive.
• C. Layer > Merge Down; this applies adjustments.
• D. Layer > New Adjustment Layer (e.g., Levels, Curves); adjustment layers are non-destructive and can be masked or clipped to specific layers.

Answer: (D)

Adjustment layers let you apply tonal changes without permanently changing the original image. By creating one with Layer > New Adjustment Layer and choosing a type like Levels or Curves, the adjustment lives on its own layer and keeps the underlying pixels intact. This non-destructive setup means you can go back and tweak the settings at any time, hide or delete the adjustment, or use the layer’s mask to control where the effect applies. You can also clip the adjustment to specific layers so only those layers are affected, which adds precise control to your edits. In contrast, editing pixels directly or merging layers changes the original data, and there isn’t the same flexible, reversible workflow.

Adjustment layers let you apply tonal changes without permanently changing the original image. By creating one with Layer > New Adjustment Layer and choosing a type like Levels or Curves, the adjustment lives on its own layer and keeps the underlying pixels intact. This non-destructive setup means you can go back and tweak the settings at any time, hide or delete the adjustment, or use the layer’s mask to control where the effect applies. You can also clip the adjustment to specific layers so only those layers are affected, which adds precise control to your edits. In contrast, editing pixels directly or merging layers changes the original data, and there isn’t the same flexible, reversible workflow.