Transcript Photoshop - Madison County Schools

P
h
o
t
o
s
h
o
p
Photoshop
• What is Photoshop?
• An image editing program used to create and
modify digital images
• What is a digital image?
– A picture in an electronic form
Workspace options
Thumbnails of minimized panels
Application bar
Expanded panels
Tools panel
Layers panel
Workspace
Zoom controls
TOOLS
Zoom Tool
• Used to enlarge and reduce the image on your
screen
• Three ways to ZOOM IN
• Choose the Zoom tool
• Press Z
• Type a magnification value
• Three ways to ZOOM OUT
• Release the Z
• Type a magnification value
• Choose Zoom out from the VIEW menu
CROP TOOL
• Cropping an image is a basic task in which you
define an area of an image that you want to
keep and then discard the remainder of the
image.
• Two ways to CROP
– Image>Crop
– Use the Crop Tool
To cancel the crop, hit ESC.
UNDO
• Three ways to UNDO an action
– CTRL + Z
– File, Revert
– History Panel
Resolution
• A bitmap graphic is a graphic composed of
pixels. The word pixel is derived from the
words picture and element. A bitmap image is
a grid of pixels.
• Photoshop images are bitmap graphics.
• Resolution is a measurement: the number of
pixels per inch (ppi).
Image Size and File Size
• Image Size refers to the physical dimensions of
the image – width and height.
– 8 x 10
–5x7
• File Size refers to how big the file is in
computer memory – how much storage space
it takes up on your computer
– 42 MB (megabytes)
Standard File Formats for
Photoshop Files
File Format
Extension Use
Bitmap
.bmp
Bitmap images, popular with Windows operating
systems
CompuServe GIF
.gif
Web graphics
Photoshop EPS
.eps
Photoshop graphics with shape layers or live type
Photoshop PSD
.psd
Basic format for all Photoshop documents
JPEG
.jpg, .jpeg
Web graphics, images to be e-mailed
PICT
.pct, .pict
Graphics to be used in presentation programs,
such as Powerpoint
Portable Network Graphics
.png
High-quality Web graphics
Tagged Image Format
.tif, .tiff
Graphics to be used for print in page layout
programs