1.
Computer Science 2

2.
Basic Concepts in Photo Editing
•Create and save new documents files in Adobe
Photoshop
•Manipulate layers in Adobe Photoshop

3.
Create and save new documents files in
Adobe Photoshop
❖ Execute Opening, Viewing and Saving of Files by
⮚ Creating a new document
⮚ Saving files
⮚ Opening Existing Documents
⮚ Changing Views
⮚ Arranging open images
⮚ Guides, Grids and Rulers

4.
Manipulate layers in Adobe Photoshop
❖ Create and use the following types of Layers
⮚ Layers Basic
⮚ Managing Layers
⮚ Layer Blending
⮚ Layer Mask
⮚ Using Smart Objects
⮚ Layer Styles

5.
Lesson 1
Overview of Adobe Photoshop
Adobe Photoshop is a seriously powerful photo and
image editing application. Let us have a quick look
at what Photoshop is, and what it is not. Remember
that Photoshop is not a drawing program.

6.
Launching the Photoshop Application
1. Click the start button on the Windows taskbar. Point to
All Programs on the start menu. Point to Adobe and then
click Adobe Photoshop.
2. Once you have opened the application (after a few
moments of loading time), the Photoshop interface will
appear as shown.

7.
⮚ Tool Bar – Provides access to a
variety of tools with multiple
image-editing functions.
•These tools typically fall under the
categories of drawing; painting;
measuring and navigation;
selection; typing; and retouching.
•Some tools contain a small triangle
in the bottom right corner of the tool
icon; these tools can be expanded
to reveal similar tools.

8.
⮚Options Bar – Works in coordination with
your tool bar to provide additional
settings for the tool you’re currently
using.
•The options bar changes according to
whichever tool you are using.

9.
⮚Menu Bar – Contains menus for performing
common tasks
•Consists of eleven menu options: File; Edit;
Image; Layer; Type; Select; Filter; 3D; View;
Window; Help
•Menu items containing an ellipsis indicate that
a dialogue box will follow that option.
•Menu items with an arrow indicate a submenu
for that particular option.

10.
⮚Panels/Palettes - Helps you
monitor and modify your work
•Provides groups of
functionalities specific to certain
tools or tasks.
•You can create a custom
workspace by moving and
manipulating panels.

11.
Opening a Photoshop Document
To open or create a new
document in Photoshop, follow
these steps:
1. Click “File” on the menu bar, and
then select “New”.

12.
Opening a Photoshop Document
To open or create a new document in
Photoshop, follow these steps:
2. You will see a New dialog box like this.
3. Use the New dialog box to create a new, blank
document. Then, select the attributes for the new file.
4. Type a name for your new document and select a
preset size from a drop-down list. Then set the
resolution and background of your new Photoshop
document. You can choose a colored, white, or
transparent background.

13.
Opening a Photoshop Document
To open or create a new document in
Photoshop, follow these steps:
5.The resolution which tells how much information is
contained in your image, how clear it is, how big the
file is and what it looks like in the format you want to
output it in. Do not get confused.
As a beginner, just use the default resolution of 72.
The recommended setting is:
Web Resolution = 72dpi
Print resolution = 150 or 300dpi
Film Resolution = 600dpi

14.
Saving a Photoshop Document
To save your file after working on your new
Photoshop document, follow the steps:
1. Click the file menu.
2. Click Save as.
3. Choose the file format (e.g., in PSD) you wish to
save the file.

15.
Changing Views
You can use the screen mode options to view images on your
entire screen. You can show or hide the menu bar, title bar, and
scroll bars.

16.
Changing Views
Do one of the following:
1. To display the default mode (menu bar at
the top and scroll bars on the side), choose
View > Screen Mode > Standard Screen
Mode. Or click the Screen Mode button in
the Application bar and select Standard
Screen Mode from the pop-up menu.

17.
Changing Views
Do one of the following:
2. To display a full-screen window with a menu
bar and a 50% gray background, but no title
bar or scroll bars, choose View > Screen Mode
> Full Screen Mode With Menu Bar. Or click
the Screen Mode button in the Application bar
and select Full Screen Mode With Menu Bar
from the pop-up menu.

18.
Changing Views
Do one of the following:
3. To display a full-screen window with only a
black background (no title bar, menu bar, or
scroll bars), choose View > Screen Mode > Full
Screen Mode. Or, click the Screen Mode button
in the Application bar, and select Full Screen
Mode from the pop-up menu.
Note:
Press the F key to quickly cycle through screen
modes.

19.
Arranging open images
The Application Frame and tabbed-
document workspace help you manage
several open documents; if you turn off
the Application Frame, your documents
can get scattered across your screen.
However, you can herd open windows
together by using the commands listed
under Window → Arrange.

20.
Arranging open images
Use the Window →Arrange commands
to create order out of chaos by tiling
(top) or cascading (bottom) your
windows. (You can’t cascade tabbed
documents because they’re attached—
or rather, docked—to the top of the
Photoshop window.

21.
Arranging open images
The fix is to choose Window →Arrange
→“Float All in Windows” first, and then
choose Cascade.) When the Application
bar was removed back in CS6, the
Arrange Documents menu disappeared
along with it; however, Adobe moved its
commands to the Window →Arrange
submenu.

22.
Arranging open images
Documents scattered across the screen

23.
Arranging open images
Cascade View

24.
Arranging open images
Tile View

25.
Guides, Grids and Rulers
To change the rulers’ zero
origin, position the pointer over
the intersection of the rulers in the
upper-left corner of the window,
and drag diagonally down onto the
image. A set of cross hairs
appears, marking the new origin
on the rulers. The new zero origin
will be set where you release the
mouse button.

26.
Guides, Grids and Rulers
Change the guides and grid
settings
1. Choose Edit > Preferences >
Guides & Grid.
2. Under the Guides or Grids area:
• Choose a preset color or click the
color swatch to choose a custom
color.

27.
Guides, Grids and Rulers
Change the guides and grid
settings
• Choose the line style for the grid.
Choose Lines for solid lines, or choose
Dashed lines or Dots for broken lines.
3. For Gridline Every, enter a number
value, and then choose the unit of
measurement to define the spacing of
major grid lines.
4. For Subdivisions, enter a number
value to define the frequency of minor
grid lines, and click OK.

28.
Lesson 2
Manipulate layers in
Adobe Photoshop
Layers Basic
Photoshop documents are composed of layers, which can basically be
described as single transparent sheets which hold particular pieces of an
image. These layers can contain images, text and vector graphics. They
can be rearranged and grouped according to user needs. Layers are
controlled with the use of the Layers pane.

29.
Layer pane

30.
Layers Pane
The layers pane is one of the panes
that is best to keep visible at all
times. If you do not see it when you
open Photoshop, go to window>
show layers and it will be restored.

31.
Adding New Layers
You can think of the layers as clear pages overlaying each other.
The layers pane provides a good visualization of this concept because the
layers appear in the layers pane as they are organized in the document. To
demonstrate this, add a new layer and type a little on it.

32.
Adding New Layers
⮚Go to Layer> and Select New Layer.
Type a name for the layer in the dialog box
that appears and click enter.
⮚It should now appear in the layers pane
(but since it is currently empty, there will be
no sign of it in the image).
⮚Select the text tool from the tool bar, click
and drag somewhere on the image
(making sure the new layer is still
highlighted in blue).

33.
Selecting Layers
1. Select the Type tool and type a title or
Filename. On the top text layer, click the eye
icon.
2. Click on the paintbrush next to it.
3. Click on the name of the layer below.
4. You see that the paintbrush now shows on
the new active layer.
5. Click on the empty paintbrush box to lock and
unlock layers to avoid unwanted changes.
6. The squiggle means it is locked.

34.
Arranging Layers
Arranging layers can be done manually. To do it,
follow these steps.
1. Click and drag your text layer underneath the
original image layer. You will see that the text no
longer appears. That is because it is now located
behind the opaque image layer.
However, there is a quicker and easier way.
2. Just click on the do geared page icon at the
bottom of the layers pane.
3. You can double click on this layer's name to
change it.
4. If you want to delete a layer, you can either drag it
to the trash icon at the bottom of the layers pane or
select the layer and click the trash icon.

35.
Merging Layers
Sometimes you want to combine the
contents of two layers onto one layer. To do
it, follow the following steps:
1. Select the layer you want to be on top of the
new merged layer, make sure the other layer
you would like to merge is directly beneath it,
and select Merge Down from the Layer menu.
2. The two layers are now one. If you want to
merge down an entire file of layers, select
"Flatten image" from the layers menu and then
all layers will be squashed into one.

36.
Merging Layers
Sometimes you want to combine the
contents of two layers onto one layer. To do
it, follow the following steps:
3. When you merge or flatten layers that
contain text layers, you will be asked whether
you would like to rasterize that text (that is,
convert it to an image and lose the ability to edit
it). It is a good idea to copy any layer and hide
them before you rasterize and merge.
4. It saves you the work of completely
recreating layers if you decide to change text.

37.
Layer Mask
Layer masking is a reversible way to hide part of a
layer. This gives you more editing flexibility than
permanently erasing or deleting part of a layer.
Layer masking is useful for making image
composites, cutting out objects for use in other
documents, and limiting edits to part of a layer.
You can add black, white, or gray color to a layer
mask. One way to do that is by painting on the
layer mask. Black on a layer mask hides the layer
that contains the mask, so you can see what is
underneath that layer. Gray on a layer mask
partially hides the layer that contains the mask.
White on a layer mask shows the layer that
contains the mask.

38.
Create a layer mask
Add a layer mask
1. Start with a document that has at
least two images, each on a
separate layer. Select the top image
layer in the Layers panel.
2. Click the Add layer mask button
in the Layers panel. This adds a
white layer mask to the selected
layer. You can still see everything
on the layer with the mask, because
the mask is white.

39.
Create a layer mask
Paint on the layer mask with black,
white, and gray
1. In the Layers panel, make sure
there is a white border around the
layer mask thumbnail. If there is not a
white border, click the layer mask
thumbnail.
2. Select the Brush tool in the Toolbar.
In the Options bar, open the Brush
Picker to set brush size and hardness.
Drag the Hardness slider toward the
left to create a soft brush tip.

40.
Create a layer mask
Paint on the layer mask with black,
white, and gray
3. Press D and then press X on the
keyboard to set the foreground color to
black and the background color to white.
4. Paint over the image in the document
window to add black to part of the layer
mask. The black hides the corresponding
part of the layer that contains the mask,
so the image on the layer underneath
shows through. Soft edges of the brush
apply gray to the layer mask, creating a
gradual transition between the layered
images.

41.
Create a layer mask
Paint on the layer mask with
black, white, and gray
5. If you hide more of a layer than
you intended to, press X on the
keyboard to switch the foreground
color to white. Then paint over
hidden areas of the layer that
contains the mask. This adds white
to the mask, bringing those areas
back into view.

42.
Create a layer mask
Tip: A quick way to change brush size as you paint is to press the
right bracket key on the keyboard to increase brush size or press the
left bracket key to decrease brush size.
Tip: Reducing the brush Flow value in the Options bar allows you to
build up shades of gray as you paint with black on a layer mask.
Shades of gray on a layer mask partially hide the layer that contains
the mask.
Save your work with layers
Save the image in .PSD or .TIFF format to retain layers and layer
masks for future editing.

43.
Understand Smart Objects
In Photoshop, you can embed the contents
of an image into a Photoshop document. In
Photoshop, you can also create Linked
Smart Objects whose contents are
referenced from external image files. The
contents of a Linked Smart Object are
updated when its source image file changes.
Linked Smart Objects are distinct from
duplicated instances of a Smart Object within
a Photoshop document. With Linked Smart
Objects, you can use a shared source file
across multiple Photoshop documents which
is a familiar and welcome concept for web
designers.

44.
With Smart Objects, you can:
1. Perform nondestructive transforms. You can scale, rotate, skew, distort,
perspective transform, or warp a layer without losing original image data or
quality because the transforms don't affect the original data.
2. Work with vector data, such as vector artwork from Illustrator, that
otherwise would be rasterized in Photoshop.
3. Perform nondestructive filtering. You can edit filters applied to Smart
Objects at any time.
4. Edit one Smart Object and automatically update all its linked instances.
5. Apply a layer mask that's either linked or unlinked to the Smart Object
layer.
6. Try various designs with low-resolution placeholder images that you later
replace with final versions.

45.
Computer Science 2
Thank You…