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HOW DO I SCAN?

This tutorial doesn't get into the nitty gritty of using scanning software. Rather, this tutorial discusses the way you need to scan images and text documents for use in different applications.

Scanning Images for:

  • Use in On-Screen Computer Presentations like Powerpoint or Web Pages
  • Editing and/or Printing

Scanning Documents with Text (and Images) for:

  • Use as an image which will be used in a Multimedia Presentation or Document or Web Page
  • Editing in a Text Editing Application like MS Word
  • Conversion to PDF format documents

Scanning for Powerpoint and the Web

Your main concern is the width and length of the scanned image in pixels, not inches.

  1. Set the scanning resolution to 75 dpi for a 1 to 1 relationship between the original image and the size of the image that will appear on the screen.
  2. You can use a higher resolution but remember that the image will appear correspondingly larger on the computer's monitor and the file size of the scanned image will be unnecessarily large.
  3. Save the image as a JPEG if it has lots of colors... photographs, or as a GIF if only a few colors... line art.
  4. Keeping file sizes small is of prime importance for web pages so you should consider "optimizing" your images for use on the Web. You can most easily optimize your images using Adobe Image Ready available in the SMS.

Scanning Image for Editing and/or Printing

If your going to want a high quality print of an image, you need to not only be concerned about the resolution, in dpi, while scanning but also the size of the output, in inches.

  1. Set the scanning resolution to at least 150 dpi but usually no more than 600 dpi is necessary. Just remember that a large 8x10 inch original image scanned at higher resolutions will become a very, very large file. Don't think that you're going to be able to save these high-res image files to a floppy disk!
  2. Set the output size for the size you want the printed image to be. This is especially important when scanning slides. A slide is only about 1.6 inches by 1 inch. That's the size it will print out as unless you change it.
  3. You should save the image without using compression. The best format for this is TIF.
  4. Dont be shocked when you open your high-res image on a computer. Remember that when you open an image scanned at a high resolution on a computer monitor, it will appear very, very large. This size has absolutely nothing to do with the size of the printed image.