Layers allow you to edit and design using a non-destructive methodology. This gives you maximum flexibility for your photographic projects.
What are layers?
You can think of layers as being like sheets of paper that are stacked one on top of the other. Transparent areas of a layer reveal the layer below, while opaque parts of a layer obscure the layers below.
All layer management is carried out from the Layers Panel.
Here are some important points regarding layers:
Once editing and designing has begun, all documents will have at least one layer.
The order of your layers is important. A layer at the top of the panel is at the front of your document and vice versa.
Any selected layer(s) are highlighted, so that you can always see what layer you are working on.
Any layer can be hidden, to exclude its content from displaying in your project.
Types of layer
There are several types of layers that can be created:
Pixel layer—containing raster images where pixel-based editing takes place.
Image layer—self contained placed images that retain the original image data including the color profile.
Mask layer—special layer that allows you to define what content is hidden to reveal layers beneath.
Adjustment layer—special layer that can be used to correct or enhance the layers beneath.
Fill layer—special layer that contains an adjustable solid or gradient color.