Transcript PowerPoint - Online Directory Western Illinois University

Photoshop Basics
Roger L. Runquist
Western Illinois University
Specific Topics
• Different techniques for making
selections
• Adding text to graphics
• Saving graphics and optimizing for
web use
• An introduction to layers
Selections
• Lots of time is spent making selections
• Once a selection is made, changes to
the image only take place inside of the
selection
• Selections can be done based on:
• Regular shapes
• Tones and colors
• “Edges”
• Freehand
Formats for the WWW
- JPEG
- Supports
“millions of
colors”
- Supports
various
levels of compression
GIF
- Supports 256 colors
(only 216 for the Web)
- Supports animations
- Supports transparent
areas
Formats for the WWW
• Ensure your color mode
• Image->Mode->RGB Color
• Ensure your dpi
• Image->Image Size and ensure dpi is
set for 72
• Ensure your scale
• Look at the title bar and zoom until it
reads 100%-> This is the size of your
web image
Formats for the WWW
• Choose File-Save for Web
• Use the “Optimize” tab to see how the
original will actually look.
• Try various compression settings.
• Remember, “Save for Web” saves a
COPY of the original