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CHAPTER 8
206
Using Layers
You can draw, edit, paste, and reposition elements
on one layer without disturbing the others.
Until you combine, or merge, the layers, each layer
remains independent of the others in the image.
This means you can experiment freely with
graphics, type, opacities, and blending modes.
Photoshop and ImageReady support normal
layers and text layers. Additionally, Photoshop
supports adjustment and fill layers. You can apply
sophisticated effects to layers using masks, layer
clipping paths, and layer styles. In ImageReady,
you can also use layers to create rollover states and
animations.
When you transfer a layered image between
Photoshop and ImageReady, all layers, layer
masks, layer clipping paths, layer styles,
and adjustment layers are preserved. Although
adjustment layers and fill layers can be applied
and edited only in Photoshop, they can be
viewed in ImageReady. Layer clipping paths
can be created with either Photoshop or
ImageReady, but Photoshop provides more
support for editing them.
About layer sets
Layer sets help you organize and manage
contiguous layers. You can expand a layer set to
display the layers it contains or collapse it to reduce
clutter. You can also use layer sets to apply masks
to groups of layers.
Layer sets function like layers; you can view, select,
duplicate, move, or change the stacking order of
layers in a set the same way you do layers. You can
easily move layers into and out of layer sets, or
create new layers within a layer set; however, you
cannot nest layers, that is, create or move one layer
set within another. Additionally, you cannot apply
a layer effect to a layer set or use a layer set as the
base for a clipping group.
Using the Layers palette
You can use the Layers palette to create, hide,
display, duplicate, merge, link, lock, and delete
layers. The Layers palette lists all layers and layer
sets in an image, starting with the topmost layer.
A thumbnail of the layer's contents appears next to
the layer name. The thumbnail is updated as you
edit. You can make changes only to the active layer,
and only one layer can be active at a time.
When you move or transform the active layer,
those changes also affect any layers linked to it.
Additionally, you can fully or partially lock layers
to protect their contents.
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