Transcript Graphics-Editing-Photoshop

Introduction
to
Photoshop
(Graphical Image Editing/Creation Program)
Adobe Photoshop is a softwares that will
enable the students to use the various
tools and effects available for photo editing
and graphic design.
Because of the growth of technology in this
day and age, it is necessary to have the
ability to work with digital media. This
presentation is an introduction to the basics
of Adobe Photoshop.
Where to Obtain Images
• Create original artwork in Photoshop
• Use images downloaded from the World
Wide Web
• Use scanned images or images taken
with a digital camera
Understanding Images
• An image is made up of dots called
pixels
• In Photoshop, you can add, delete,
or modify individual pixels or
groups of pixels
Basic concepts
• Pixel
– Specific location
– Specific color
Magnify an image to see pixels
Common tasks
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Resizing an image
“Straightening” an image
Cropping an image
Adjusting brightness and contrast
Adding layers
Resolution
• Number of PIXELS per square inch
• Monitors display 72 pixels/sq inch
• Printers are much higher
– 300 pixels/sq inch
• File size differences in 1X1 in
– Web 5,184 pixels
– Print 90,000 pixels
Color
• Monitors display light directly
– Term RGB (Red Green Blue)
– Different monitors may display colors
differently
• Printing images
– Term CMYK (Cyan, Magenta, Yellow, blacK)
– Colors will look different than on the screen
File Formats
Use Photoshop to open and create
different kinds of file formats
Creating a New File
• Click File on the menu bar
• Click New
• Enter the required width in the
Width text box
• Enter the required height in the
Height text box
• Click OK
Saving a File Options
• Use Save As to save a file under a
new name and to preserve a copy
of the original file
• Open a file in one file format (e.g.,
.BMP) and save it in another file
format (e.g., .JPG)
Setting Preferences
• Use the Preferences dialog box to
customize how files are opened in
Photoshop
• Options include:
– Using Open Recent to locate and
open files recently worked on
– Changing the Image Preview to
thumbnails
Opening a File
• Use the File Browser to open a file:
– Click the File Browser tab in the
palette well
– Navigate to the location of the file
– Double-click the file to open it in
Photoshop
Docked File Browser Palette
File Browser
tab
Palette well
Examining the Photoshop
Window
• The Workspace includes the
following elements:
– Work area
– Command menu
– Toolbox
– Status bar
– Palettes
Workspace Elements
Palettes
Command
menu
Work Area
Toolbox
Status Bar
Customizing the Workspace
• Customize the workspace by
positioning elements to suit your
working style
• To save a workspace:
– Click Window on the menu bar, point
to Workspace, click Save
Workspace, type a name, then click
Save
Using Tools
• Use tools in Photoshop to perform
actions (e.g., zoom, type text, etc.)
• Point to a tool to view a ScreenTip
that provides the name or function
of the tool
• Check the tool options bar to view
current settings for a selected tool
Using Tool Shortcut Keys
• Press and hold [Shift]
• Press the tool’s shortcut key (e.g., T
for Type Tool)
• Continue to press [Shift] and the
shortcut key to cycle through a
tool’s hidden tools
Using Palettes
• Use palettes to verify settings and
modify documents
• Each palette consists of multiple
palettes
• Palettes can be separated and
moved around the workspace
• Each palette contains a menu
Palette Example
Click to
access the
palette menu
Click a tab to
make a palette
active
History Palette
• The History palette contains
a record of each task
completed in a document
• The record of an event is
called a state
• The History palette displays
up to 20 states
History
• Undo
– Takes you back one step
• Step Backward
– Takes you back one step at a time
• History Palette (displays steps)
– Open under WINDOW
• Revert
– Back to the last saved version
• SAVE OFTEN WITH DIFFERENT NAMES!
Practice Using Tools
• Create a new document
Let’s get creative!
• Select foreground
and background colors
• Choose the paint
brush
• Now the eraser
• Try the pencil
Let’s open a file to be edited
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Open Willie.jpg
Image, Image size
Pixel width 200
Bicubic Sharper
SAVE as smw.jpg
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Open Willie.jpg
Image, Image size
Constrain proportions OFF
Image, Image size
Pixel width 200 (UNDO)
Pixel height 200 (UNDO)
Use Filters for Special Effects!
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Open Willie
Select a Filter
Example:
Artistic, Dry Brush
Save file with
different name
• williedb
Adjustments
The following tools are used to alter photos in order to bring out details and balance intensity.
Brightness & Contrast
Go to the Toolbar, click on Image →
Adjustments → Brightness/Contrast
Curves
Go to the Toolbar, click on Image
→ Adjustments → Curves
Rotations
Go to the Toolbar,
click on Image →
Rotate Canvas
Cropping
The Crop Tool is used to remove unwanted space or material.
1. Find the Crop Tool in
the toolbox on the lefthand side of the screen.
2. Select desired area.
3. Click on Crop Tool
again to finalize.
Resizing
There are two methods to resize photos. Resizing photos is a convenient
way to make sure the photo is the correct size for a project.
Method 1: Go to the Toolbar,
click on Image → Image Size.
Adjust width and height to
desired measurements. This will
resize the entire image.
Method 2: Select desired layer,
press Ctrl+T on keyboard.
Hold down the Shift key to maintain
proportions. This method will resize
only the selected layer.
Layers
Layers make it possible to add modifications that can be removed quickly and easily. They
can be added individually or can be created from an existing part of the document.
To insert a new layer: Go to the
Toolbar, click on Layer → New →
Layer.
*To make a layer
without deleting it,
click the eye.
To make a layer from the
existing document: choose
selected area with the marquee
tool, right click selected area
and choose
Layer via Cut/Copy.
Layers
• Tool to enable complex compositions
• Allows “stacking” of image parts
• Layers may be added and deleted at
will
Understanding Layers
• What are layers?
– A section within an image that
can be manipulated
independently
– Use layers to control
individual elements in a
document
Layers Palette
• The order in which the
layers appear in the Layers
palette matches the order in
which they appear in the
document
Layers Palette
Currently
active layer
Flattening Layers
• Save before flattening
• Save with new name after flattening
• Flattening is necessary for many
techniques including some file types
• Select Layers, Flatten layers
Magic Wand
The Magic Wand Tool is used to select all the colors in a certain range. By changing
the tolerance, one can adjust the sensitivity between ranges.
Step 1: Click on the Magic
Wand Tool in the Toolbox.
*By increasing or
reducing the
Tolerance, one can
select more or less of
the selected color
range, respectively.
Step 2: Click the desired color area and
experiment with the Tolerance level.
Shapes
Shapes can be used to create a decorative touch to a picture.
Click on the Shape Tool in the Toolbox. Select preferred shape.
Drag and drop on picture. Use Text Box to add text if wanted.
Clone Stamp Tool
The Clone Stamp Tool is used to simultaneously copy portions of a photo onto a specific area.
Click on the Clone
Stamp Tool in the
Toolbox. Alt+Click to
select desired area.
Click and hold to
clone the selected
portion.
Opacity
Opacity changes the transparency of a photo.
The Opacity scale is
located on the lower
right-hand toolbox.
“Flipping” an image
• Image, Rotate Canvas
– 90 or 180
– Flip Horizontal or Vertical
• Copy “Lovett” below
– Image, rot. image, flip vert.
• UNDO
Change Canvas Size
• For composite images, change canvas size on one image,
paste and position extra images in one at a time.
• Image, canvas size,
double ht, set “anchor”
as appropriate
– Default is center
– This example is upper left
More Tools for Selecting Image Parts
(Delete or Copy)
• Marquee Tools
• Lasso Tools
– Magnetic Lasso
• Magic Wand
More Editing Tricks
– Brightness/Contrast
– Variations
– Sharpen an image
Sharpen an Image
• There are many options in Photoshop
• Try Filter, Sharpen, Smart Sharpen
– 100%, 0.2 pixels, Lens Blur
• Enlarge to view detail
Using Help
• Photoshop Help information
appears in a browser
window
• Five links are included in the
Help window:
– Using Help, Contents, Index,
Site Map, Search
View and Print Documents
• Use the Zoom tool to
change views—up to a
maximum of 1600%
• Use the Page Setup dialog
box to set printing options
Online Photoshop Resources
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http://www.adobephotoshoptutorials.com/
http://www.good-tutorials.com/
http://www.sketchpad.net/photoshp.htm
http://www.photoshop101.com/
http://www.photoshopsupport.com/tutorials.html