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Adobe 23101335 User Guide - Page 252

Using adjustment layers or fill layers (Photoshop), Applying and discarding layer masks

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242 CHAPTER 8 Using Layers 2 To turn on the layer clipping path, Shift-click the layer clipping path thumbnail in the Layers palette. You can also use the Layer menu to temporarily turn off a layer clipping path. Applying and discarding layer masks When you have finished creating a layer mask, you can either apply the mask and make the changes permanent or discard the mask without applying changes. Because layer masks are stored as alpha channels, applying and discarding layer masks can help reduce file size. (See "Storing masks in alpha channels" on page 199.) To apply or discard a layer mask: 1 Click the layer mask thumbnail in the Layers palette. 2 To remove the layer mask and make changes permanent, click the Trash button ( ) at the bottom of the Layers palette, then click Apply. 3 To remove the layer mask without applying the changes, click the trash button at the bottom of the Layers palette, then click Discard. You can also apply or discard layer masks using the Layer menu. Selecting opaque areas on a layer By loading a layer 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. • To add the pixels to an existing selection, press Ctrl+Shift (Windows) or Command+Shift (Mac OS), and click the layer or layer mask thumbnail in the Layers palette. • To subtract the pixels from an existing selection, press Ctrl+Alt (Windows) or Command+Option (Mac OS), 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 (Windows) or Command+Option+Shift (Mac OS), 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 or fill layers (Photoshop) An adjustment layer lets you experiment with color or tonal adjustments to an image without permanently modifying the pixels in the image. The color or tonal changes reside within the adjustment layer, which acts as a veil through which the underlying image layers appear.

Section	Page
Table of Contents	3
Getting Started	11
Registration	11
Installing Adobe Photoshop and ImageReady	11
Learning Adobe Photoshop and ImageReady	11
Using Web resources	13
Other learning resources	14
Customer support	15
Adobe Photoshop Basics	19
Using tools and palettes	20
Opening images in Photoshop and ImageReady	22
Streamlining your workflow	24
Making tonal and color adjustments	26
Retouching images	27
Making pixel selections	28
Making edits	30
Using layers	32
Compositing images	34
Painting	36
Drawing shapes	37
Creating type	40
Editing type	41
Designing Web graphics	42
Creating animations (ImageReady)	43
Optimizing Web graphics	44
What’s New in Adobe Photoshop 6.0	49
Superb vector support	50
Enhanced vector output	52
Layer styles	52
Interactive image warping	54
Enhanced slicing capabilities	55
Enhanced support for image maps and rollovers	57
Weighted optimization	58
Improved Web workflow	58
Streamlined interface	59
Enhanced layer management	60
Expanded text features	61
Preset Manager	63
Other new and enhanced features	63
Looking at the Work Area	67
Using the toolbox	67
Using the tool options bar	69
Using palettes	70
Using context menus	74
Viewing images	74
Correcting mistakes	78
Reverting to any state of an image	79
Duplicating images	83
Using rulers, the measure tool, guides, and the grid	84
Working with Extras	87
Displaying status information	88
Displaying file and image information	88
Annotating images (Photoshop)	90
Jumping between applications	92
Previewing an image in a browser	94
Managing libraries with the Preset Manager (Photoshop)	95
Setting preferences	96
Resetting all warning dialogs	97
Monitoring operations	98
Closing files and quitting	98
Getting Images into Photoshop and ImageReady	101
About bitmap images and vector graphics	101
About image size and resolution	102
Changing image size and resolution	105
Scanning images	109
Creating new images	110
Opening and importing images	111
Placing files	114
Managing files with WebDAV	116
Working with Color	119
About color modes and models (Photoshop)	119
Color gamuts (Photoshop)	124
Adjusting the monitor display	124
Channels and bit depth (Photoshop)	126
Converting between color modes (Photoshop)	127
Converting to indexed color (Photoshop)	128
Applying colors	128
Making color and tonal adjustments	128
Producing Consistent Color (Photoshop)	131
Why colors sometimes don’tmatch	131
About color management	131
Do you need color management?	132
Creating a viewing environment for color management	133
Setting up color management	134
Using predefined color management settings	134
Customizing color management settings	136
Specifying working spaces	137
Specifying color management policies	138
Customizing advanced color management settings	140
Saving and loading color management settings	140
Synchronizing color management between applications	141
Soft-proofing colors	141
Changing the color profile of a document	143
Embedding profiles in saved documents	144
Obtaining, installing, and updating color profiles	144
Creating an ICC monitor profile	146
Selecting	149
About selections	149
Making pixel selections	149
Adjusting pixel selections	156
Softening the edges of a selection	157
Moving, copying, and pasting selections and layers	159
Working with snap	162
Saving and loading selections	163
Deleting selections	163
Removing fringe pixels from a selection (Photoshop)	164
Extracting objects from their background (Photoshop)	164
Drawing and Editing	171
About drawing and painting	171
Drawing shapes and paths	171
Using the shape tools	174
Using the pen tools (Photoshop)	176
Drawing overlapping shapes (Photoshop)	181
Using the Paths palette (Photoshop)	181
Editing paths (Photoshop)	182
Managing paths (Photoshop)	189
Converting between paths and selection borders (Photoshop)	190
Adding color to paths (Photoshop)	192
Transforming and retouching	192
Using Channels and Masks	195
About channels	195
Using the Channels palette (Photoshop)	195
Managing channels (Photoshop)	197
Mixing color channels (Photoshop)	200
Adding spot colors (Photoshop)	201
Using channel calculations to blend layers and channels (Photoshop)	204
About masks (Photoshop)	207
Creating temporary masks in Quick Mask mode (Photoshop)	207
Storing masks in alpha channels	209
Using Layers	215
About layers	215
About layer sets	216
Using the Layers palette	216
Creating a layered image	220
Grouping layers into sets	223
Moving and aligning the contents of layers	224
Editing layers	226
Creating clipping groups	228
Specifying layer properties	229
Using the Layer Style dialog box (Photoshop)	230
Setting layer blending options	231
Using layer styles	236
Customizing layer styles	240
Creating and editing contours (Photoshop)	246
Hiding portions of a layer	247
Using adjustment layers or fill layers (Photoshop)	252
Managing layered images	256
Using Type	261
About type	261
Creating type	261
Working with type layers	264
Formatting characters	268
Formatting paragraphs	275
Controlling hyphenation and justification	277
Working with composition	277
Setting options for Chinese, Japanese, and Korean type (Photoshop)	277
Designing Web Pages	281
About designing Web pages with Photoshop and ImageReady	281
Creating and viewing slices	282
Selecting and modifying slices	286
Specifying slice options	291
Creating and viewing image maps (ImageReady)	296
Selecting and modifying image maps (ImageReady)	298
Specifying image map options (ImageReady)	301
Selecting an image map type (ImageReady)	302
Working with rollovers (ImageReady)	302
Creating Web photo galleries (Photoshop)	307
Creating Animations (ImageReady)	311
About animation	311
Creating animations	311
Working with layers in animations	316
Viewing animations	319
Optimizing animations	319
Viewing animated images in Photoshop	320
Saving animations	320
Opening and importing files as animations	321
Optimizing Images for theWeb	325
About optimization	325
Viewing images during optimization	326
Choosing a file format for optimization	327
Optimizing images	330
Using weighted optimization	337
Optimizing colors in GIF and PNG-8 images	340
Working with hexadecimal values for color	347
Making transparent and matted images	349
Previewing and controlling dithering	351
Setting optimization preferences (ImageReady)	355
Using a droplet to automate optimization settings (ImageReady)	356
Saving optimized images	357
Setting output options	358
Creating background images	362
Saving and Exporting Images	367
Saving images	367
About file formats	374
Adding file information (Photoshop)	376
Adding digital copyright information	376
Setting preferences for saving files (Photoshop)	376
Creating multiple-image layouts (Photoshop)	377
Placing Photoshop images in other applications (Photoshop)	379
Printing (Photoshop)	385
About printing	385
Printing images	386
Positioning and scaling images	387
Setting output options	388
Selecting halftone screen attributes	389
Printing part of an image	392
Choosing a print encoding method	392
Printing vector graphics	392
Using color management when printing	392
Printing with Adobe PressReady	393
Creating color traps	394
Printing duotones	394
Printing color separations	399
Automating Tasks	403
About actions	403
Using the Actions palette	404
Recording actions	404
Playing actions	409
Setting playback options (Photoshop)	410
Editing actions	410
Managing actions in the Actions palette	412
Using the Batch command (Photoshop)	415
Using droplets	416
Using the Automate commands (Photoshop)	420
External automation	421
Index	423

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CHAPTER 8

242

Using Layers

To turn on the layer clipping path, Shift-click

the layer clipping path thumbnail in the

Layers palette.

You can also use the Layer menu to temporarily

turn off a layer clipping path.

Applying and discarding layer masks

When you have ﬁnished creating a layer mask,

you can either apply the mask and make the

changes permanent or discard the mask without

applying changes. Because layer masks are stored

as alpha channels, applying and discarding layer

masks can help reduce ﬁle size. (See “Storing

masks in alpha channels” on page 199.)

To apply or discard a layer mask:

Click the layer mask thumbnail in the

Layers palette.

To remove the layer mask and make changes

permanent, click the Trash button (

) at the

bottom of the Layers palette, then click Apply.

To remove the layer mask without applying the

changes, click the trash button at the bottom of the

Layers palette, then click Discard.

You can also apply or discard layer masks using the

Layer menu.

Selecting opaque areas on a layer

By loading a layer 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.

•

To add the pixels to an existing selection,

press Ctrl+Shift (Windows) or Command+Shift

(Mac OS), and click the layer or layer mask

thumbnail in the Layers palette.

•

To subtract the pixels from an existing selection,

press Ctrl+Alt (Windows) or Command+Option

(Mac OS), 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

(Windows) or Command+Option+Shift

(Mac OS), 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 trans-

parency mask.

Using adjustment layers or ﬁll

layers (Photoshop)

An adjustment layer lets you experiment with

color or tonal adjustments to an image without

permanently modifying the pixels in the image.

The color or tonal changes reside within the

adjustment layer, which acts as a veil through

which the underlying image layers appear.