Photoshop Basics

Roger L. Runquist
Western Illinois University
Photoshop Basics

Different techniques for making selections
Adding text to graphics
Saving graphics and optimizing for web use
An introduction to layers
Specific Topics

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

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Photoshop Basics

by jkchapman on May 14, 2008

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