Adobe 65016169 - Photoshop CS4 Extended Instructions de fonctionnement

Adobe Photoshop CS4 p. 1

PHOTOSHOP CS4 TUTORIAL

Adobe Photoshop CS4 p. 2

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Adobe Photoshop CS4 is a popular image editing software that provides a work environment con-

sistent with Adobe Illustrator, Adobe InDesign, Adobe ImageReady, and other products in the Adobe

Creative Suite. This tutorial is an introduction to using Adobe Photoshop. Here you will learn how to

get started, how to use the interface, and how to modify images with basic

Section 1: Getting Started Pg. 3

Section 2: Interface Layout Pg. 5

Section 3: Palettes Pg. 6

Section 4: Toolbox Pg. 10

Section 5: Selection Tools Pg. 11

Section 6: Alteration Tools Pg. 12

Section 7: Drawing and Selection Tools Pg. 13

Section 8: Assisting Tools Pg. 13

Section 9: Color Boxes and Modes Pg. 14

Section 10: Basic Image Editing Pg. 14

Section 11: Cropping Pg. 15

Section 12: Resizing Pg. 19

Section 13: Correcting Pg. 22

Section 14: Sharpening/Softening Pg. 27

Section 15: Saving Pg. 29

Adobe Photoshop CS4 p. 3

OPENING

Begin by opening Adobe Photoshop CS4.

On a PC, click Start > Programs > Adobe > Photoshop CS4, or click on the shortcut on the desktop.

On a Mac, click Macintosh HD > Applications > Adobe Photoshop CS4 > Photoshop CS4 shown

in Figure 1, or click the icon in the Dock.

Fig. 1. Navigation to Photoshop CS4 on a Mac

SETTING UP THE DOCUMENT

Setting up your document correctly from the start will make your job much easier as you work through

your project. This will require some advanced planning. For example, if your nal output will be a bro-

chure, you may need to set up your document to be horizontal and double-sided.

To create a new document, click File > New. This will open the Document Setup dialog box (Fig. 2).

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Adobe Photoshop CS4 p. 4

Fig. 2. Document Setup dialog box

Here you will be able to name your le, set up the correct page size, and orientation for your docu-

ment. Options include, but are not limited to:

Page Size and Orientation

Change the page size by typing in new values for width and height. Page size represents the nal

size you want after bleeds or trimming other marks outside the page. In the Preset dropdown menu

you can nd such common sizes as letter, legal, tabloid, etc. Typing in exact values for Height and

Width gives you more control over the size and orientation of your page.

Resolution

Resolution is a number of pixels on a printed area of an image. The higher the resolution, the more

pixels there are on the page, the better is the quality of the image. However, high resolution increas-

es the size of the le. The standard recommended resolution for printed images is 150-300, for Web

images it is 72.

Color Mode

Choose a color mode that will best t your project. For example, when making a graphic for a web

site, choose RGB. When making an image for print, choose CMYK.

Background Contents

Choose the background: white, color, or transparent. When you have entered all of your document

settings, click OK.

OPENING AN IMAGE FROM A DISK

If the image you have is saved on a disk, select File > Open, and then navigate to the disk drive

where your image is saved. Choose the image le and click Open. At this point, you may want to

save your image under a different name so that you can always have the original to fall back on in

case of a mistake. To save you r le, select File > Save As and type in the new name of the le in

the dialogue box. Now you should be ready to go.

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Adobe Photoshop CS4 p. 5

This is the layout of Adobe Photoshop interface.

Menu Bar

If you look at the top of the screen you will see the Menu bar which contains all the main functions of

Photoshop, such as File, Edit, Image, Layer, Select, Filter, View, Window, and Help.

Tool Bar

Most of the major tools are located in the Tool bar for easy access.

The Image

The image will appear in its own window once you open a le.

Image Name

The name of any image that you open will be at the top of the image window as shown above.

Palettes

Palettes contain functions that help you monitor and modify images. By default, palettes are stacked

together in groups. These are the palettes that are usually visible: Color, Adjustments,and Layers.

If none of the palettes are visible, go to Window in the Menu bar and choose palettes you need to

work with.

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Adobe Photoshop CS4 p. 6

Below is the description of the most commonly used palettes in Adobe Photoshop CS4. Palettes

used for more advanced image editing will be covered in the Adobe Photoshop CS4 Tutorial -Inter-

mediate.

COLOR, SWATCHES, STYLE

The Color palette (Fig. 2) displays the current foreground and background colors and RGB values

for these colors. You can use the sliders to change the foreground and background colors in dif-

ferent color modes. You can also choose a color from the spectrum of colors displayed in the color

ramp at the bottom of the palette.

Fig. 2. Color palette

In the Swatches palette (Fig. 3) you can choose a foreground or background color or add a

customized color to the library.

Fig. 3. Swatches palette

The Styles palette (Fig. 4) allows you to view, select, and apply preset layer styles. By default, a

preset style replaces the current layer style. You can use the styles in the palette or add your own

using the Create New Style icon.

Figure 4. Styles palette

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Adobe Photoshop CS4 p. 7

HISTORY

The History palette (Fig. 5) stores and displays each action performed allowing you jump to any

recent stage of the image alteration. The alterations should be created during the current working

session; after saving or closing the document the History palette clears all the contents. Each time

you apply a change to an image, the new state of that image is added to the palette. The History

palette can store up to 20 stages. However, you can always go back to the rst stage, for example

opening the document. It is important to know that once you click on any of the previous stages, all

the changes that were made after it will be lost.

Fig. 5. History palette

ADJUSTMENTS

Adjustment layers give you the ability to apply an effect to a group of layers in Photoshop, and then

you can edit that effect later, while preserving the original layers.

Fig. 6. Adjustments palette

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Adobe Photoshop CS4 p. 8

LAYERS

Layers let you organize your work into distinct levels that can be edited and viewed as individual

units. Every Photoshop CS4 document contains at least one layer. Creating multiple layers lets you

easily control how your artwork is printed, displayed, and edited. You will use the Layers palette (Fig.

6) often while creating a document, so it is crucial to understand what it does and how to use it.

A) Layer Visibility -The eye shows that the selected layer is visible. Click on or off to see or to hide

a layer.

B) Layer Locking Options -Click the checkered square icon to lock Transparency; click the brush

icon to lock the Image; click the arrow icon to lock the Position; click the lock icon to lock all options.

C) Layer Blending Mode -Denes how the layer’s pixels blend with underlying pixels in the image.

By choosing a particular blending mode from the dropdown menu you can create a variety of special

effects.

D) Fill -By typing in a value or dragging the slider you can specify the transparency of the Fig. 6.

Layers Palette color of the image or object.

E) Opacity -By typing in a value or dragging a slider you can specify the transparency of the entire

layer.

F) Layer Lock -The icon shows when the layer is locked and disappears when it is unlocked.

Double-click the icon to unlock the layer.

G) Layer Options Menu -Click the black triangle to see the following options: New Layer, Duplicate

Layer, Delete Layer, Layer Properties, etc. Some of the options are presented as icons at the bottom

of the Layers palette.

H) Link Layers – Can be used to link layers together.

I) Layer Styles -If a layer has a style, an “F” icon shows at the bottom of the Layers palette. Click

the little black triangle to see style options.

J) Layer Mask -A grayscale image, with parts painted in black hidden, parts painted in white show-

ing, and parts painted in gray shades showing in various levels of transparency.

K) Layer Set -This option helps to organize images with multiple layers. Click the icon to create a

folder for several layers.

L) Create New Fill or Adjustment Layer -Have the same opacity and blending mode options as

image layers and can be rearranged, deleted, hidden, and duplicated in the same manner as image

layers. Click the icon and select an option to create a new ll or adjustment layer.

M) Create New Layer -Click this icon to create a new layer.

N) Delete Layer -To delete a layer, select a layer in the Layers palette and drag it to the trash can

icon; or, select a layer and click the icon.

Adobe Photoshop CS4 p. 9

Fig. 6. Layer palette

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Adobe Photoshop CS4 p. 10

If you used other Adobe products, such as Illustrator or InDesign, you should be familiar with the

toolbox in Adobe Photoshop CS4 as it shares some of the tools from these applications. If you are

a novice user of Adobe products, you should keep in mind that you might not need to use all of the

tools. In this tutorial, only the basic tools will be discussed in depth.

Some tools in the toolbar have additional “hidden” tools. These tools have small black triangles in

the right-hand corner. To view the “hidden” tools, click and hold down on any tool that has a black

triangle in the corner (Fig. 1).

Fig. 1. “Hidden” tools

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