What is an adjustment layer in Premiere Pro?

An adjustment layer in Premiere Pro is a powerful tool that allows users to apply effects to all the layers beneath it in the timeline, without altering those individual layers directly. This functionality is particularly useful for applying color corrections, effects, or any other adjustments uniformly across multiple clips.

When an adjustment layer is placed above clips in the timeline, any effects applied to that adjustment layer will affect all clips underneath it. This simplifies the editing process, enables quick adjustments, and promotes a non-destructive workflow, as the original clips remain unchanged. Users can easily toggle the visibility of the adjustment layer or remove it completely without impacting the creative decisions made with the underlying clips.

This feature is crucial for editors who want to maintain flexibility in their projects, allowing for quick updates to applied looks or styles without having to go into each individual layer. In contrast, other options refer to different functionalities or elements within Premiere Pro that do not encompass the concept of adjustment layers.