Photoshop cs5 by steve Johnson part 15 pps

Not only can you modify selections in any number of ways, Photoshop gives you the option to change your mind by adding and subtracting to an existing selection or even using the selectio

To say that Photoshop helps you make selections easily would be an understatement Not only can you modify selections in any number of ways, Photoshop gives you the option to change your mind by adding and subtracting to an existing selection or even using the selection tools to crop the image Since most selections are not perfect the first time around, knowing how to modify a selection marquee gives you the control you need to make perfect selections Adding to and subtracting from an image is accomplished by simple keyboard shortcuts, or by making choices from the Options bar Either way, you can create com-plex selections with ease

Adding and

Subtracting a

Selection

Add to an Existing Selection

Create a selection using any of the

selection tools

Add to the selection by holding

down the Shift key, and then use a

selection tool to add to the existing

selection (the selected areas do

not need to be contiguous)

Release the mouse and the Shift

key to complete the addition

Subtract from an Existing

Selection

Create a selection using any of the

selection tools

Subtract from the selection by

holding down the Alt (Win) or

Option (Mac) key

Create a selection that intersects

with the existing selection

Release the mouse and the keys to

complete the subtraction

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Two separate selections

Cropping a document brings focus to the information contained within the image For example, you take a photograph of an insect on a flower

To increase the focus on the insect, then crop out the flower Cropping eliminates distractions, which would otherwise take away from the mes-sage of the image With the Crop tool, you can select the cropping area, and then adjust it using a cropping shield and guide overlay (New !)

Cropping a Selection

Crop a Selection

Select the Crop tool on the

toolbox

Drag a selection around the area

of the image you want to crop

◆ To adjust the selection, drag a

selection handle

Click the Crop Guide Overlay list

arrow on the Control panel, and

then select an option: None, Rule

of Thirds, or Grid.

To display a shield in the cropped

area, select the Shield check box

on the Control panel

◆ Color Select a shield color.

◆ Opacity Specify a shield

transparency percentage

Click the Commit or Cancel button

to keep or cancel the change

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Did You Know?

You can crop an existing selection.

Create a selection using any of the

selection tools, click the Image menu,

and then click Crop

Once a selection is made, it's possible

to modify the selection using standard

transform tools To transform a

selec-tion, click the Select menu, and then

click Transform Selection You can

expand, contract, and even rotate the

selection marquee To exit Transform

Selection, simply double-click in the

selection marquee, or press the Enter

(Win) or Return (Mac) key

Cropping an Image with a User-Defined Shape

You can crop an image using a user-defined shape, such as a heart

Select the Custom Shape tool on the toolbox, and then select a shape

on the Options bar Create a new layer directly above the image layer, and draw the cropping shape Select the Shape layers button on the Options bar Select the Move tool and place the shape directly over the area you want to crop In the Layers panel, drag the shape layer directly under the image layer (shape disappears), and then point to the line separating the image layer from the shape layer Hold down the Alt (Win) or Option (Mac) key, and then click to create a clipping group and crop to the shape To make the crop permanent, hide all layers except the shape and image layers, click the Options button on the Layers panel, and then click Merge Visible

For Your Information

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Photoshop's primary method of creating selections is through the use

of tools from the toolbox, such as the Marquee, Lasso, and Magic Wand, and while they create impressive and complex selections, Photoshop has other ways to capture that tricky selection using the Channels panel The Channels panel primarily holds color information, but that's not all it can hold You can use the Channels panel to create and store complex selections Photoshop holds selection information using black (masked), white (selected), and shades of gray (percent-ages of selection) In addition, channels can be saved with the image file

Using Channels to

Create and Store

Selections

Create Selections with Channels

Select the Channels panel.

Click the individual color channels

Look for a channel that represents

a brightness difference between

what you want to select and what

you want to mask

Make a copy of the channel by

dragging it down over the New

Channel button on the Channels

panel

Select the new channel

Click the Image menu, point to

Adjustments, and then click

Threshold.

Drag the Threshold slider left or

right until the visible image

represents a black and white mask

of your selection

Click OK.

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Did You Know?

Selection masks created from color

channels will not always be perfect

For example, you may see unwanted

spots of white or black When that

happens, do the best you can using the

Threshold command, and then paint

with white or black to clean up the

mask

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Apply Selection Masks to

an Image

Click the Select menu, and then

click Load Selection.

Click the Channel list arrow, and

then select the newly created

channel

Click OK.

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Selection

See Also

See “Creating Channel Masks from

Selections” on page 255 for more

infor-mation on using channel masks as

selections

Selections can be as simple as dragging a circle or square with one of the marquee tools or as complicated as a freeform selection Whatever the case, Photoshop allows you to enhance any selection with its use-ful modification tools After creating a selection, you can modify it with the various options that Photoshop offers in order to make complex selections easier to use

Modifying an Existing

Selection

Modify an Existing Selection

Create a selection, click the Select

menu, and then select an option:

◆ All Selects all pixels within the

active document

◆ Deselect or Reselect Removes

the active selection or recreates

the last active selection

◆ Inverse Lets you reverse the

previous selection

◆ All Layers Lets you select all the

layers in the Layers panel

(excluding the Background)

◆ Deselect Layers Deselects all

layers in the Layers panel

◆ Similar Layers Selects similar

layers such as: all type layers, or

all shape layers

◆ Color Range Creates a selection

based on a range of colors within

the active document

◆ Redefine Edge Creates a

selection from a complex image

◆ Modify Lets you modify the

border, Expand, Contract, or

Smooth the selection in the

active document

◆ Grow Lets you increase a

selection by adding pixels

◆ Similar Lets you increase a

selection by adding

non-contiguous pixels

◆ Transform Selection Creates a

bounding box around the active

selection that you can modify

◆ Edit in Quick Mask Mode View

your selection in Quick Mask

Mode

◆ Load or Save Selection Lets you

load or save a previously saved

channel mask selection

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Selection

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Available selection options

After you make a selection in a Photoshop document, you can copy or cut it to the Clipboard where you can paste it to another place in your active document or in another document Using the Copy or Cut and Paste commands have been around for a long time, however, Photoshop has added some variation to it You can use the Paste Special menu to provide more direction to the paste location by using the Paste In Place (New !), Paste Into, and Paste Outside (New !) commands If the con-tent of the Clipboard doesn’t contain pixels from a Photoshop document, the special paste commands work just like the Paste command

Copying and Pasting a

Selection

Copy or Cut and Paste

Select an area of an image using

any of the selection tools in a

Photoshop document

Click the Edit menu, and then click

Copy (active layer), or Copy

Merged (all layers), or Cut (move).

Use any of the following paste

commands:

◆ Paste Pastes the selection as a

new layer Click the Edit menu,

and then click Paste.

◆ Paste In Place Pastes selection

into the same relative location

between source and destination

documents Click the Edit menu,

point to Paste Special, and then

click Paste In Place ( New!)

TIMESAVER Press Shift+Ctrl+V

(Win) or Shift+A+V (Mac)

◆ Paste Into or Paste Outside

Pastes the selection inside or

outside (New!) a selection

This adds a layer and layer

mask The selection is

unmasked (white), while the

rest of the layer is masked

(black) Select a destination,

click the Edit menu, point to

Paste Special, and then click

Paste Into or Paste Outside.

TIMESAVER For Paste Into,

press Alt+Shift+Ctrl+V (Win) or

Option+Shift+A+V (Mac)

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Background layer

Paste Into layer

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3 Paste Into