Adobe PHOTOSHOP ELEMENTS Manual page 192

CHAPTER 8
184
Using Layers
Threshold
the Threshold command" on page 96.)
Posterize
each color channel. (See "Using the Posterize
command" on page 97.)
Editing adjustment layers or fill layers
Once you create an adjustment or fill layer, you can
easily edit the settings, or dynamically replace it
with a different adjustment or fill type.
You can also edit the mask of an adjustment layer
or fill layer. A layer mask protects sections of a
layer (or the entire layer) from being edited and
can be used to show or hide sections of an image.
When the layer mask is attached to an adjustment
or fill layer, it is used to control the effect that the
layer has on the image. By default, all areas of an
adjustment or fill layer are "unmasked" and,
therefore, are showing.
The layer mask is a grayscale image, so what you
paint in black will be hidden, what you paint in
white will show, and what you paint in gray shades
will show in various levels of transparency. Masks
can be edited like a grayscale image.
Adjustment layer with triangular mask added
Specify a threshold level. (See "Using
Specify the number of tonal levels for
To edit an adjustment or fill layer:
Do one of the following:
1
Double-click the adjustment or fill layer's
•
thumbnail in the Layers palette.
Choose Layer > Layer Content Options.
•
2 Make the desired adjustments, and click OK.
Note: Inverted adjustment layers do not have
editable settings.
To change the content of an adjustment or fill layer:
1 Select the adjustment layer or fill layer that you
want to change.
2 Choose Layer > Change Layer Content and
select a different fill or adjustment layer from
the list.
To edit the layer mask for an adjustment or fill layer:
1 Select the adjustment layer or fill layer in the
Layers palette.
2 Select any painting or editing tool.
Use the following methods to view the
3
layer mask:
Alt-click (Windows) or Option-click (Mac OS)
•
the adjustment layer thumbnail to view only the
grayscale mask. Alt/Option-click the thumbnail
again to redisplay the other layers.
Hold down Alt+Shift (Windows) or
•
Option+Shift (Mac OS), and click the adjustment
layer thumbnail to view the mask in a rubylith
masking color. Hold down Alt/Option+Shift
and click the thumbnail again to turn off the
rubylith display.