Photoshop cs5 by steve Johnson part 23 pptx

When working with adjustment layers, you can modify, merge, or even create a temporary composite image, all while your original image stays intact.. In addition to letting you apply adju

Working with Adjustment

Layers, Filters, and Tools

Introduction

If you want to visually control an Adobe Photoshop

docu-ment, then adjustment layers are the ultimate tool The

pur-pose of an adjustment layer is to show how a specific

adjustment, such as Hue & Saturation, changes the

appear-ance of the image Since the adjustment is contained within a

separate layer, the original image never changes This gives

you the ability to experiment with different settings Since

adjustment layers can be saved with the document, you can

close the document, then return at a later time to make

fur-ther adjustments

Another advantage of adjustment layers is size

Adjustment layers do not increase the size of a Photoshop

document Most Photoshop layers are composed of pixels,

so adding traditional layers to a document increases the size

of the file Since adjustment layers are simply a set of

mathe-matical data, they do not increase the size of the file

Photoshop has two ways to apply adjustments to an

image You could go to the Image menu, and choose

Adjustments; however, when you apply an adjustment using

this method, it's permanent The other way is to use an

adjustment layer—the very definition of control over time

When working with adjustment layers, you can modify,

merge, or even create a temporary composite image, all

while your original image stays intact With all of their

advan-tages, you may never perform adjustments using the Image

menu again

In addition to letting you apply adjustments to an image

without changing the original data, adjustment layers,

because they are separate layers, give you the ability to

apply standard layer controls, such as blending modes,

opac-ity, and fill Adjustment layers come with their own built-in

masks, and allow you to control how and where the

7 What You’ll Do

Create an Adjustment Layer Modify an Adjustment Layer Merge Adjustment Layers Create a Temporary Composite Image Control Adjustment Layers with Clipping Groups

Delete an Adjustment Layer Use Blending Modes and Opacity with Layers

Use Masks with Adjustment Layers Create Masks with Selections Retouch Images with Filters Keep Proper Perspective with Vanishing Point

Work with the Lens Correction Filter Retouch Images with Tools and Filters Control Tonal Range

Work with the Histogram Panel

Adjustment layers are applied within the Layers panel and use the Adjustment panel By default, all layers beneath the adjustment layer are changed In addition, adjustment layers will work on any type of Photoshop layer, including the Background You can have as many adjustment layers as you need For example, you might create a Levels adjustment layer to control the contrast of an image, and add a Curves adjustment layer to correct image color When you create more than one adjustment layer, each adjustment is applied to the image based on its stacking order in the Layers panel

Creating an

Adjustment Layer

Create an Adjustment Layer

Select the Layers panel.

Click the layer you want to adjust

Click the Create New Fill or

Adjustment Layer button, and then

select from the available types of

adjustment layers

You can also open the Adjustments

panel to set adjustment settings

You can choose from 15 icons

representing most of the

adjustment layer options Below

the icons are a listing of presets

available for some adjustments

When you click one of the icons,

controls for that type of

adjustment appear on the panel

Adjust the controls for the specific

adjustment in the Adjustment

panel

◆ To change the focus on the

panel text boxes (New !), press

Shift+Enter (Win) or Return

(Mac), and then press Tab to

switch between boxes

At the bottom of the Adjustments

panel, you can use buttons that

allow you to go back to the list of

adjustment types, switch the panel

from Expanded to Standard view,

clip the adjustment to the layer

below, make the layer visible or

invisible, revert to the image state

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Applying Adjustment Layers

When you apply an adjustment layer to an image, you are no longer required to save the document in the PSD (Photoshop Document) format Photoshop supports saving files with multiple layers, includ-ing adjustment layers, in the TIFF (Tagged-Image File Format) file type The files can be opened just like ordinary TIFF files in standard layout applications However, when the file is opened in applications

For Your Information 3

Adjustments panel 4

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Presets

The beauty of adjustment layers is in the control they offer to the Photoshop user When you use the Image menu, and click Adjustments, any changes made to the image are permanent as soon as you click

OK But that's not true of adjustment layers Adjustment layers keep the changes isolated in a separate layer, and this allows you to modify the adjustment minutes, or even days later With this type of creative con-trol at your fingertips, you can experiment with different settings until the image looks exactly the way you want

Modifying an

Adjustment Layer

Modify an Adjustment Layer

Select the Layers panel.

Double-click on the thumbnail of

the adjustment layer you want to

modify

The options for that specific

adjustment reopens in the

Adjustments panel If you didn't

already have the Adjustments

panel open, clicking on the layer

you want to modify will open it

automatically Options for each

type of adjustment dialog box

varies

Make the changes you want for

the specific adjustment

Click OK.

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Did You Know?

You can move adjustment layers up

and down in the layer stack Since

each adjustment layer interacts with

other adjustment layers, changing the

order of the layers creates a totally

different image

Photoshop lets you create as many adjustment layers as you need For example, you might create a Levels adjustment layer to balance image contrast, a Curves adjustment layer to correct color, and a Photo Filter adjustment layer to create an overall warming effect to the image Each adjustment layer works with the other adjustment layers to produce the final image It's not unusual to have three, four, or even five adjustment layers controlling a single image At some point in the design, you might decide to save space by merging some or all of the adjustment layers

However, when you merge the adjustment layers, the adjustment effects are lost, as a result of how Photoshop deals with adjustment layers Each adjustment layer controls one specific part of the adjust-ment, such as Curves or Levels The layers themselves do not hold an image; they hold mathematical data on how to change an image A single adjustment layer cannot hold more than one set of adjustments

That's why you have multiple adjustment layers Merging two or more adjustment layers together forces Photoshop to discard all of the adjustment data and the merged adjustment layers turn into one plain old transparent layer To solve the problem, try merging the adjustment layers and the image layer into one single layer

Merging Adjustment

Layers

Merge Adjustments with Images

Open a document containing an

image layer, and two or more

adjustment layers

Select the Layers panel.

Click the Layers Options button,

and then select from the following

merge options:

◆ Merge Layers Merges only the

layers selected in the Layers

panel into a single layer

◆ Merge Visible Merges only the

layers that are visible, leaving

the hidden layers untouched

◆ Flatten Image Merges all

layers into a flattened

background If you have one or

more layers hidden, Photoshop

will open a warning dialog box

and ask if you want to discard

the hidden layers

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Show button

When you merge adjustment layers into the image, you wind up with a single layer that contains all of the adjustments By merging the adjust-ment layers, you do lose control over the individual adjustadjust-ment layers

It's basically a trade-off of smaller file sizes and less layers to contend with, but also less control over the image Let's say you want the best

of both worlds—a single layer that contains the image, all of the adjust-ments, and the original image with separate adjustment layers It's pos-sible; all you have to do is create a composite layer

Creating a Temporary

Composite Image

Create a Temporary

Composite Image

Open a document that contains

an image, and two or more visible

adjustment layers

Select the Layers panel, create a

new layer at the top of the layer

stack, and then select it

Hold down the Alt (Win) or Option

(Mac) key, click the Layers

Options button, and then click

Merge Visible.

Photoshop combines all of the

visible layers into a new layer,

while leaving the original layers

untouched

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All visible layers are combined into the new layer

Create New Layer button

Did You Know?

You can use the composite layer

option on any multi-layered Photoshop

document Once you've created the

composite layer, you can perform other

adjustments without impacting the

original image, or even drag and move

the composite into another Photoshop

document

You can use the link option to control

the composite image Create a new

layer, and then link the layers you want

included in the composite Follow the

steps for creating a composite, except

click Merge Linked

When you work with adjustment layers, the adjustments are applied to all the layers below the adjustment layer, including any additional adjustment layers However, there are times when you only want the adjustment applied to a specific layer For example, you're working on a multi-layered document and you create a Curves Adjustment layer for the purpose of adjusting the color in the next layer down Unfortunately, the Curves adjustment is applied to all the layers The answer is simple;

just create a clipping group to combine the adjustment layer with the one layer you want to be affected

Controlling Adjustment

Layers with Clipping

Groups

Control Adjustment Layers with

the Clipping Group Option

Select the Layers panel, and then

click the layer you want to adjust

Move your cursor down until the

fingertip of the hand pointer

touches the line separating the

adjustment layer from the next

layer down

Hold down the Alt (Win) or Option

(Mac) key

The cursor changes from a hand

pointer to a double-circle button

(the clipping group button)

Click your mouse to group the two

layers together

The thumbnail of the adjustment

layer indents to indicate the two

layers are grouped The effect of

the adjustment layer impacts the

layer below and no others

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Layers linked as a clipping group

Did You Know?

You can group more than one layer

together Hold down the Alt (Win) or

Option (Mac) key, and then click on the

line separating the next layer to add a

layer to the group To remove a layer

from the group, hold down the Alt

(Win) or Option (Mac) key, and then

click on the line separating two

When you delete an adjustment layer you are simply deleting the adjustment, not the image Adjustment layers do not contain pixels;

they only manipulate the information contained within the image layer

Deleting an adjustment layer is as easy as deleting any other layer type The effect is the same; the function of the layer is removed from the document For example, if you delete a Curves adjustment layer, the effects are removed and the image returns to its original state When you delete an adjustment layer, the change to the image created by the adjustment layer is removed, and the image returns to its original state

Deleting an

Adjustment Layer

Delete an Adjustment Layer

Select the Layers panel.

Click the adjustment layer you

want to delete

Drag the adjustment layer onto the

Delete Layer button

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The adjustment layer is removed

from the document.

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Did You Know?

You can convert an adjustment layer

into a regular layer By default,

adjust-ment layers come with a built-in mask

To remove the mask while preserving

the adjustment layer, select the

adjust-ment layer in the Layers panel, hold

down the Alt (Win) or Option (Mac)

key, and then click the Delete Layer

button