Selecting Opaque Areas On A Layer; Using Adjustment Layers - Adobe PHOTOSHOP 5.0 User Manual

Selecting opaque areas on a
layer
By loading a transparency mask, you can quickly
select all the opaque areas on a layer—that is, the
areas within the layer boundaries. This is useful
when you want to exclude transparent areas from
a selection. You can also load the boundaries of a
layer mask as a selection.
To load a layer or layer mask's boundaries as a
selection:
Do one of the following:
In the Layers palette, Ctrl-click (Windows) or
•
Command-click (Mac OS) the layer or layer mask
thumbnail.
Layer pixels loaded as selection
To add the pixels to an existing selection, press
•
Ctrl+Shift/Command+Shift, and click the layer or
layer mask thumbnail in the Layers palette.
To subtract the pixels from an existing selection,
•
press Ctrl+Alt/Command+Option, and click the
layer or layer mask thumbnail in the Layers palette.
To load the intersection of the pixels
•
and an existing selection, press
Ctrl+Alt+Shift/Command+Option+Shift,
and click the layer or layer mask thumbnail in
the Layers palette.
To move all the contents of a layer, you
can use the move tool without loading a
transparency mask.

Using adjustment layers

An adjustment layer lets you experiment with
color and tonal adjustments to an image without
permanently modifying the pixels in the image.
The color and tonal changes reside within the
adjustment layer, which acts as a veil through
which the underlying image layers appear.
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User Guide