Adobe photoshop cs2 Manual De Usuario
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ADOBE PHOTOSHOP CS2
User Guide
Photoshop lets you create masks in the following ways:
Quick Mask mode
Lets you edit any selection as a mask. The advantage of editing your selection as a mask is that
you can use almost any Photoshop tool or filter to modify the mask. For example, if you create a rectangular selection
with the Marquee tool, you can enter Quick Mask mode and use the Paintbrush tool to expand or decrease the
selection, or you can use a filter to distort the edges of the selection. You can also use selection tools, because the
quick mask is not a selection. You can also save and load selections you make using Quick Mask mode in alpha
channels.
with the Marquee tool, you can enter Quick Mask mode and use the Paintbrush tool to expand or decrease the
selection, or you can use a filter to distort the edges of the selection. You can also use selection tools, because the
quick mask is not a selection. You can also save and load selections you make using Quick Mask mode in alpha
channels.
Alpha channels
Let you save and load selections. You can edit alpha channels using any of the editing tools. When
a channel is selected in the Channels palette, foreground and background colors appear as grayscale values. Storing
selections as alpha channels creates more permanent masks than the temporary masks of Quick Mask mode. You can
reuse stored selections or even load them into another image.
selections as alpha channels creates more permanent masks than the temporary masks of Quick Mask mode. You can
reuse stored selections or even load them into another image.
Selection saved as an alpha channel in Channels palette
Note: In Photoshop and ImageReady, it’s possible to create layer masks to isolate and protect areas of an image. Layer
masks, and also vector masks in Photoshop, let you produce a mix of soft and hard masking edges on the same layer. By
making changes to the layer mask or the vector masks, you can apply a variety of special effects. Because ImageReady
doesn’t let you work with channels, its layer masks aren’t stored as alpha channels.
masks, and also vector masks in Photoshop, let you produce a mix of soft and hard masking edges on the same layer. By
making changes to the layer mask or the vector masks, you can apply a variety of special effects. Because ImageReady
doesn’t let you work with channels, its layer masks aren’t stored as alpha channels.
See also
To create a temporary mask for use as a selection
To use Quick Mask mode, start with a selection and then add to or subtract from it to make the mask. You can also
create the mask entirely in Quick Mask mode. Color differentiates the protected and unprotected areas. When you
leave Quick Mask mode, the unprotected areas become a selection.
create the mask entirely in Quick Mask mode. Color differentiates the protected and unprotected areas. When you
leave Quick Mask mode, the unprotected areas become a selection.
Note: A temporary Quick Mask channel appears in the Channels palette while you work in Quick Mask mode. However,
you do all mask editing in the image window.
you do all mask editing in the image window.
1
Using any selection tool, select the part of the image you want to change.
2
Click the Quick Mask mode button
in the toolbox.
A color overlay (similar to a rubylith) covers and protects the area outside the selection. Selected areas are left unpro
tected by this mask. By default, Quick Mask mode colors the protected area using a red, 50% opaque overlay.
tected by this mask. By default, Quick Mask mode colors the protected area using a red, 50% opaque overlay.