Basics
Photoshop layers resemble stacked sheets of acetate. You can see the layers underneath through the transparent areas of a layer. If you move a layer to place the contents in it, it's like sliding a sheet of acetate in a pile. Also, if you wish, have the ability to change opacity of a layer so that its content is partially transparent.
layers are used to perform various tasks, among others, compose multiple images, add text to an image or add vector graphics. Applying a layer style easy to add special effects like drop shadows or some kind of glow.
Operations nondestructive
Sometimes it seems as if some layers were devoid of content. Adjustment layers For example, only contain color or tonal adjustments that affect the lower layers. So, rather than edit image pixels, you can edit an adjustment layer and maintain the underlying pixels unchanged.
There is a special type of layer called Smart Object and containing at least one layer of content. Smart objects can be transformed (skewed or scaled and form) without directly editing image pixels. You can also edit the Smart Object as a separate image even after it is placed in a Photoshop image. Apart from the above, smart objects support Smart Filter effects necessary to implement a non-destructive filters to images in order to adjust these effects later or, if preferred, to remove them.
The Layers panel lists all layers, all layers and groups of all layer effects in an image. You can use the Layers panel to show and hide layers, create new layers and layers work with groups. You can access additional commands and options in the Layers panel menu.
B.
layer group C.
layer D. Expand / Collapse effects E.
layer F.
layer effect
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