You can create a vector layer by using options in the Layers or Masks panel.. Like a layer mask, a vector masks appears as an additional thumbnail to the right of the layer thumbnail in
Trang 1Layer masks can create more than simple vignettes around an image
In fact, with the right filters you can create some very interesting and fun-looking borders For example, when you create a selection using one of Photoshop's standard selection tools—rectangle, ellipse, or lasso—the selection has a sharp, definable border The secret to creat-ing unique borders is to create a general selection around a portion of the image you want to preserve, create the layer mask, and then use some of Photoshop's creative filter effects, such as the Artistic or Distort filters on the mask Using filters on the image mask creates eye-catching borders and it's only a filter away
Creating Unique Layer
Mask Effects
Create a Layer Mask Effect
Open a document
Click the layer in the Layers panel
to which you want to apply a
unique border
Create a rectangular selection
around a portion of the image
Click the Add Layer Mask button.
Click the layer mask thumbnail
Click the Filter menu, point to
Brush Strokes, and then click the
Sprayed Strokes filter.
Adjust the filter options to change
the edge of the layer mask
Click OK.
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The Sprayed Strokes filter applied to the layer mask.
Did You Know?
You can apply more than one filter to a
layer mask border For example, using
the Spatter filter creates a ragged
edge to the layer mask Applying a
small amount of Gaussian Blur to the
mask softens the effect and creates a
more pleasing visual transition
between the mask and the
back-ground
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Trang 2A vector mask is a resolution independent object—such as a rectangle, circle, or custom shape or drawing—created with a pen or shape tool
The vector mask represents a changeable path that clips out the con-tents of the layer You can create a vector layer by using options in the Layers or Masks panel Like a layer mask, a vector masks appears as an additional thumbnail to the right of the layer thumbnail in the Layers panel, which you can use to work with the mask
Creating a Vector
Mask
Create and Work with a Vector
Mask
Open a document
Select the Layers and Masks
panel
Click the layer that will contain the
mask
Select the path or create a path
using the shape or pen tools
Click the Add Vector Mask button
on the Layers or the Vector Mask
button on the Masks panel
Click on the layer thumbnail to
modify or adjust the image
Click on the vector mask thumbnail
to modify the mask using shape
and pen tools
To disable or enable the mask,
Shift+click on the mask thumbnail ,
or select the layer, click the
Disable/Enable Mask button on
the Masks panel
To view or hide the mask in the
document window, Alt+click (Win)
or Option+click (Mac) on the mask
thumbnail
To remove a layer mask, select the
layer, click the Vector Mask
button, and then click the Delete
Mask button on the Masks panel.
◆ To remove and apply the layer
mask, click the Apply Mask
button on the Masks panel
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Vector Mask button
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Vector mask
Trang 3After you create a layer or vector mask, you can use the Layers and Masks panels to modify it Before you can work with a mask, you need
to select it The quickest way is to select the thumbnail in the Layers panel, however, you can also use the Masks panel You can modify a mask several different ways, including unlink or link the mask and layer, view or hide it, disable or enable it, remove it, or adjust the mask
Modifying Layer and
Vector Masks
Modify a Layer or Vector Mask
Open a document
Select the Layers and Masks
panel
To select the image layer or mask,
click on the image thumbnail to
modify or adjust the image, or click
on the mask thumbnail to modify or
paint on the mask
To unlink or link a mask from its
layer, click the link button to
toggle it
To disable or enable the mask,
Shift+click on the mask thumbnail,
or select the layer, and then click
the Disable/Enable Mask button in
the Masks panel
To view or hide the mask in the
document window, Alt+click (Win)
or Option+click (Mac) on the mask
thumbnail
To remove a layer mask, select the
layer, click the Pixel Mask or
Vector Mask button, and then click
the Delete Mask button on the
Masks panel
◆ To remove and apply the layer
mask, click the Apply Mask
button on the Masks panel
To control the opacity (density) of
the mask and adjust the feather
edge, drag the sliders on the
Masks panel
◆ You can also access layer mask
options to select a color range,
refine the mask edge, or invert
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Apply Mask button
Vector Mask button Pixel Mask button
Trang 4The Channels panel serves three purposes—to hold color information,
to hold spot color information, and to hold selections (channel masks)
Creating channel masks can be as easy as clicking the Create New Channel button and then using any painting or drawing tools to create the mask, or by making a selection and converting the selection into a mask by clicking the Save Selection As Channel button When you paint the channel mask, the defaults are—black for masked areas, white for selected areas, and shades of gray for percentages of selection
Creating Channel
Masks
Create a Channel Mask
Open an image and create a
selection
Select the Channels panel.
Click the Create New Channel
button
Select the new channel
Select the Brush tool on the
toolbox, and then select a brush
tip on the Options bar
Paint areas of the mask white to
create a selection
Paint areas of the mask black to
mask the image
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Did You Know?
You can quickly convert a channel
mask into a selection To view a
chan-nel mask as a selection, open the
Channels panel, and then Ctrl+click
(Win) or A+click (Mac) on the
chan-nel Photoshop instantly translates the
black, white, and gray areas of the
mask into a visible selection in the
document window
Trang 5Channel masks are easy to create and once created, are just as easy to modify All you need is an open document, and access to the Channels panel After selecting a painting or drawing tool, you paint on the mask
to define the selection area The problem is you can't see the image;
you can only see the mask What you need is the ability to view the mask and the image at the same time, as if you were using tracing paper, and then use the drawing tools to paint (trace) the portions of the image you want to select The secret to viewing the image as you create the mask is to temporarily enable or show, the composite chan-nel In fact, the composite channel acts like a toggle switch—when it's visible, you see the image and the mask (tracing paper); when it's hid-den, you only see the mask
Creating Channel
Masks from Scratch
Create a Channel Mask from
Scratch
Open an image
Select the Channels panel.
Click the Create New Channel
button
Click the Show/Hide button on the
composite channel The image is
revealed in the document window
(the new Alpha channel should
still be selected) You will use the
image to guide the creation of the
mask
Select the Brush tool on the
toolbox
Paint areas of the image using
white to create a selection
(painting with white exposes the
original image)
Paint areas of the image black to
mask the image (painting with
black masks the image with the
default color of red)
Click the Show/Hide button on the
composite channel The image is
hidden, revealing just the mask
Repeat steps 6-8 until the mask is
complete
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Trang 6Channel masks have default options that control how the mask looks and functions Photoshop gives you the ability to change the default options of a channel mask For example, you could change the default color from red to blue, or you could change the function of the channel mask from Selection to Spot Color Knowing you can change the mask options gives you more control over the final results
Modifying Channel
Mask Options
Create or Modify Channel
Masks Using Options
Open a document
Select the Channels panel.
Click the Channels Options button,
and then click New Channel to
create a new channel or
double-click an existing channel in the
Channels panel
Enter a name for the new channel
Click the option to define the mask
color as the Masked Areas,
Selected Areas, or Spot Color
Click the Color box, and then
select a color from the Color
Picker
Enter an Opacity percentage value
(1% to 100%) for the color
Click OK.
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Did You Know?
You can change the Channel options
for a preexisting channel Double-click
on the channel, and Photoshop will
open the Channel options dialog box
You can set Channel options for each
channel Changing the Channel options
only impacts that specific channel
Each channel can have its own
individual settings