Done by: Raqaya
Al_Busaidi
ID: 90535
PHOTOSHOP
Table of ContentsInstructio
n Introducti
on Lesson
sQuiz
Instruction
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Introduction
As you work with Adobe Photoshop,
you’ll discover that there is often more
than one way to accomplish the same
task. To make the best use of the
extensive editing capabilities in these
programs, you first must learn to
navigate the work area.
Lessons
Working with Selections
Masks and Channels Adobe
Basic Photo Corrections
Working with Selecti
ons
Working with Selections
Overview
Sections
practice
Learning how to select areas of an image is
of primary importance— you must first
select what you want to affect. Once you’ve
made a selection, only the area within the
selection can be edited. Areas outside the
selection are protected from change.
Overview
section1: Practicing making selectionsection2: Moving selection
contentssection3:Selecting with the
magic wand tool
Sections
section1: Practicing making selections
In this section, you’ll experiment with making
selections before you begin working in earnest
on your sample files. By working with the tools
in a practice session, you’ll understand better
how the basic tools work and how to use them.
You’ll also learn about selecting and moving as
a two-step process. In Photoshop, you first
select the part of an image you want to move
with one of the selection tools. After you select
it, you can then use another tool to move the
selected pixels to another location.
DB
CA
A. Marquee toolB. Move toolC. Lasso toolD. Magic wand tool
sections
1.1: Selecting and deselecting an area of an image.
1.2: Repositioning a selection border while creating it.
section1: Practicing making selection
You’ll start practicing selection techniques using the
rectangular marquee tool.
2. Drag diagonally from the upper left corner to the lower
right corner of the book to create a rectangular selection.
1. In the toolbox, select the rectangular marquee tool.
You can move a selection border after you’ve drawn it.
1.1: Selecting and deselecting an area of an image.
3. Drag from the book to a different area of the image window.
Note: Repositioning techniques for selection borders work with any of the marquee, lasso, and magic wand tools.
4. Choose Edit > Deselect. Or, you can deselect by clicking
another area in the window, outside the selection border.
1. Select the zoom tool, and click the black oval on the right
side of the image window as needed to zoom in to at least
100% view.2. Select the elliptical marquee tool hidden under the rectangular
marquee tool.
1.2: Repositioning a selection border while creating it.
3. Move the pointer over the oval, and drag diagonally across
the oval to create a selection.
4. Still holding down the mouse button, hold down the
spacebar on your keyboard and drag the selection.
5. Carefully release the spacebar, and continue to drag, trying
to make the size and shape of the selection match the oval
as closely as possible.
6. When the selection border is positioned and sized correctly,
release the mouse button.
Now that you’ve had some experience with a couple of
methods of making selections, you’re ready to start using
selections to make changes in your image. In the previous
procedures, you made selections with various tools and
used different keyboard combinations to help you make
them, but you did not change the image.
section2: Moving selection contents
sections
2.1: Selecting from a center point.
2.2: Moving and changing the pixels in a selection.
2.3: Moving and duplicating simultaneously.
section2: Moving selection contents
1. In the toolbox, select the zoom tool.
2. Scroll to the globe in the lower left area of the image, and click
the zoom tool to increase the magnification to about 300%.
3. In the toolbox, select the elliptical marquee too.
2.1: Selecting from a center point.
4. Move the pointer to the approximate center of the globe.
5. Click and begin dragging. Then without releasing the mouse
button, hold down Alt (Windows) or Option (Mac OS) and
continue dragging the selection to the outer edge of the globe.
6. When you have the entire globe selected, release the mouse
button first and then release Alt or Option (and the Shift key,
if you used it, too).
1. Choose View > Fit on Screen to adjust the magnification so
that the entire image fits within the image window.
2. In the toolbox, select the move tool. Notice that the globe
remains selected.
2.2: Moving and changing the pixels in a selection.
3. Position the pointer within the globe selection.
4. Drag the globe above the book image, somewhat close to
the right edge.
5. Choose Image > Adjustments > Invert.
The colors making up the globe are inverted, so that it is now
effectively a color negative the original.
1. Using the move tool, hold down Alt (Windows) or Option
(Mac OS), and position the pointer within the globe
selection. 2. Continue holding down Alt or Option, and drag a duplicate
of the globe down and to the right. Release the mouse
button and Alt or Option, but do not deselect the duplicate
globe.
2.3: Moving and duplicating simultaneously.
3. Choose Edit > Transform > Scale to activate a bounding box
around the selection.
4. Hold down Shift and drag one of the corner points to enlarge
the globe so that it is larger than the original by about half.
Then press Enter to commit the transformation and hide the
bounding box.
5. Hold down Shift+Alt (Windows) or Shift+Option (Mac OS),
and drag a new copy of the second globe down and to the
right.6. Repeat steps 3 and 4 for the third globe, making it about
twice the size of the first one.
7. When you are satisfied with the size and position of the third
globe, choose Select > Deselect, and then choose File >
Save.
1. Select the magic wand tool.
2. In the tool options bar, enter 70 in the Tolerance text box to
increase the number of similar tones that will be selected.
3. Using the magic wand tool, click what looks like the surface
of the large number “5” image.
section3:Selecting with the magic wand tool
sections
4. To select the remaining area of the number “5,” hold down
Shift, so that a plus sign appears with the magic wand
pointer, indicating that whatever you click will be added to
the current selection. Then click one of the unselected areas
of the blue number “5.”
Initial selection Adding to selection(Shift key depressed)
Complete selection
5. Continue adding to the selection until all the blue areas are
selected.
6. With all of the “5” selected, hold down Ctrl (Windows) or
Command (Mac OS) and drag the number to the area to the
upper left of the book image.
7. Choose Select > Deselect.
practice
Use lasso tool to select the pen and change the position of the pen.
lessons
Masks and
ChannelsAdobe
Masks and Channels Adobe
Overview
Sections
practice
Adobe Photoshop uses masks to isolate
and manipulate specific parts of an
image. A mask is like a stencil. The
cutout portion of the mask can be
altered, but the area surrounding the
cutout is protected from change. You
can create a temporary mask for one-
time use, or you can save masks for
repeated use
Overview
Section1: Creating a quick mask
Section2: Editing a quick mask
Section3: Creating a gradient mask
Sections
1. Select the magic wand tool.
2. In the tool options bar, enter 12 in the Tolerance text box.
3. Click anywhere in the white area of the egret to begin
the selection process.
Section1: Creating a quick mask
4. To extend the selection, hold down Shift and click the magic
wand on another white portion of the egret.
Magic wand selection Selection extendedsections
5. Select the Quick Mask mode button in the toolbox. By
default, you have been working in Standard mode.
A. Standard mode
B. Quick Mask modeQuick mask selectionshowing red overlay
Next, you will refine the selection of the egret by
adding to or erasing parts of the masked area. You’ll
use the brush tool to make changes to your quick
mask. The advantage of editing your selection as a
mask is that you can use almost any tool or filter to
modify the mask. (You can even use selection tools.)
In Quick Mask mode, you do all of your editing in the
image window.
Section2: Editing a quick mask
sections
1. To make the foreground color white, select the Switch
Foreground and Background Colors icon above the
foreground and background color-selection boxes.
2. Select the zoom tool and magnify your view of the image, if needed.
3. Select the brush tool.
4. In the tool options bar, make sure that the mode is Normal.
Then click the arrow to display the Brushes pop-up palette,
and select a medium-sized brush, such as one with a
diameter of 13 pixels.
5. Using the brush tool, begin painting over the red areas within
the egret’s body. As you paint with white, the red areas are
erased.
Unedited mask Painting with white Result
6. Continue painting with white to erase all of the mask (red)
in the egret, including its beak and legs.
Standardmode
Edited mask inStandard mode
Quick mask selection
7. Once you’ve erased all of the red areas within the egret, click
the Standard mode icon again to view your quick mask as a
selection.
8. If necessary, zoom out so that you can see the entire image.
1. In the Channels palette, create a new channel by clicking the
New Channel button at the bottom of the palette.
2. Double-click the Alpha 1 channel and type Gradient to
rename it.
Section3: Creating a gradient mask
3. Select the gradient tool.
sections
4. In the tool options bar, click the arrow to display the
Gradients picker and select the Black, White gradient.
5. Hold down Shift to keep the gradient vertical, and drag the
gradient tool from the top of the image window to the bottom
of the window.
practice
Extract the object from its background for this picture.
lessons
Basic Photo
Corrections
Basic Photo Corrections
Overview
Sections
practice
Adobe Photoshop includes a variety of tools
and commands for improving the quality of a
photographic image. This lesson steps you
through the process of acquiring, resizing,
and retouching a photo intended for a print
layout. The same workflow applies to Web
images.
Overview
Section1: Straightening and cropping an image
Section3: Adjusting lightness with the dodge tool
Sections
Section2: Replacing colors in an image
1. select the crop tool. Then, in the tool options ensions (in
inches) of the finished image: For Width, type 2 and for
Height type 3.
Section1: Straightening and cropping an image
2. Draw a marquee around the image. As you drag, the
marquee retains the same proportion as the dimensions
you specified for the target size (2 x 3).
sections
3. In the tool options bar, make sure that the
Perspective check box is not selected.
4. In the image window, move the pointer outside the crop
marquee, so that it appears as a curved double arrow. Drag
clockwise to rotate the marquee until it is parallel with the
edges of the pictured window frame.
5. Place the pointer inside the crop marquee, and drag the
marquee until it contains all the parts of the picture you
want shown to produce an artistically pleasing result. If you
also want to adjust the size of the marquee, drag one of the
corner handles.
Initial crop marquee Marquee rotated Marquee moved Marquee resized
6. Press Enter. The image is now cropped, and the cropped image now
fills the image window, straightened, sized, and cropped according to
your specifications.
Image cropped
1. Select the rectangular marquee tool, and draw a selection
border around the blue wall at the top of the image.
Section2: Replacing colors in an image
2. Choose Image > Adjustments > Replace Color to open the
Replace Color dialog box. By default, the Selection area of
the Replace Color dialog box displays a black rectangle,
representing the current selection.
sections
A B C
A. Single-color eyedropper tool
B. Eyedropper plus tool
C. Eyedropper minus tool
3. Select the first (single-color) eyedropper tool in the
Replace Color dialog box and click anywhere in the blue-
wall area of the image window to select all of the area with
that color.
4. In the Replace Color dialog box, select the eyedropper-plus
tool, and drag over the other areas of the blue wall until
the entire wall shape is highlighted in white in the dialog
box.
5. Adjust the tolerance level of the mask by dragging the
Fuzziness slider or typing 80.
6. If there are any white areas of the mask display in the
dialog box that are not part of the wall, select the
eyedropper-minus tool and click in the black area around
the selection in the Replace Color dialog box to remove
most of the white.
7. In the Transform area of the Replace Color dialog box, drag
the Hue slider to –40, the Saturation slider to –45, and the
Lightness slider to 0.
8. Click OK to apply the changes.
1. In the toolbox, select the dodge tool.
Section3: Replacing colors in an image
2. In the tool options bar, select the following settings:
For Brush, select a fairly large feathered brush on the Brush
pop up palette, such as 27. Then click outside the palette to
close it.
In the Range pop-up menu, select Highlights.
For Exposure, type or use the pop-up slider to enter 15%.sections
3. Using vertical strokes, drag the dodge tool over the window
curtains to bring out the details. You don’t always need to use
vertical strokes with the dodge tool, but they work well with
this particular image. If you make a mistake or don’t like the
results, choose Edit > Undo and try again until you are
satisfied with the results.
Original Result
practice
Adjusting saturation for this picture with the sponge tool
lessons
Quiz
1.Once you’ve made a selection, what
area of the image can be edited?
Review the answer
Review the answer
2. How do you add to and subtract from a
selection?
Review the answer
3. What is the benefit of using a quick mask?
Review the answer
4. What happens to a quick mask when
you deselect it?
5. What does resolution mean?
Review the answer
6. How can you use the crop tool in photo
retouching?
Review the answer
1. Only the area within the selection
can be edited.
Back
Back
2. To add to a selection, hold down Shift, and
then drag or click the active selection tool
on the area you want to add to the
selection. To subtract from a selection,
hold down Alt (Windows) or Option (Mac
OS), and then drag or click the active
selection tool on the area you want to
remove from the selection.
Back
3. Quick masks are helpful for creating
quick, one-time selections. In
addition, using a quick mask is an
easy way to edit a selection using the
painting tools.
Back
4. The quick mask disappears when you
deselect it.
Back
5. The term resolution refers to the number of
pixels that describe an image and establish
its detail. The three different types of
resolution include image resolution,
measured in pixels per inch (ppi); monitor
resolution, measured in dots per inch (dpi);
and printer or output resolution, measured
in ink dots per inch.
6. can use the crop tool to trim, scale,
and straighten an image.
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