A Digital Demo--Page Two, Scanning
Kalamazoo College
Richard Koenig

Office Location: Light Fine Arts 203, Phone: 337.7003

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Scanning: Reflective & Transparent




Scan a Reflective Image
    To use one of the Epson scanners in the FABLAB, please try the following...

    Make sure it is plugged into one of the adjacent computers and turned on

    Click on the applications folder in the launcher and go to "Image Capture"

    The scanner should show up under "devices"...if so, select it

    If you do not see many settings available, click "show details"

    The scanner may perform a preview scan at this point

    But now you should set several things...

      Set the scan mode--flatbed or transparency (see below for the latter)

      Set what kind of scan you want to perform--color, grayscale, or text

      Colors--leave at "millions" for now (and whenever possible)

      Resolution...

        This scanner will go anywhere from 72 to 6400 dpi, but this higher end is used for scanning film, and usually for only a very small area. You probably want soemething in the 150 to 300 ppi range for normal flatbed scanning.

        A further note here on dpi/ppi/filesize...for use on the web, you need not go over 72 dpi as all screens will max out at that resolution—and scans for printed pieces should be scanned for an end use of 300 dpi.

        But one must consider the size of the original when you doing this: if the thing you are scanning is very small (like a postage stamp, for example), and you intend it to go much larger in its end use, you must scan at a much higher resolution.

        You can reverse-engineer your files size. Make a new imgage in Photoshop the size you want your final image to be (at its intended ppi). Then use image size to to resize to the size of the original (make sure "resample image" is un-clicked). Look at the ppi window when you do this--it will tell you how to set the resolution.

        In the end, my suggestion is to scan a bit higher than your target and save that as your master copy (as a png). You can change size and file format later as need be.

      Set scan to=>desktop

      Set format to png

      And leave everything else as "none" (we can do all of that in photoshop)


    Place something on the flatbed to be scanned

    Be careful so as to not damage or scratch glass, use acetate if need be for protection.

    Hit overview: this will quickly scan entire bed

    Alter the marquee (dotted line) to select only the part you want to scan

    Hit scan

    An image should appear on the desktop (if not, check in "pictures")

    Drag this over the Photoshop icon to optimize and edit

    When done, remember to save and name properly





Scan a Transparent Image
    These images are from the epson materials that came with the scanner...

    This manual and the film holders shold be setting on top of the computer near the scanner

      Prep the scanner first






      Get the appropriate film holder that you will need




      Place a film holder on the flatbed with your slide or negative, with upper right hand corner of the film holder touching the upper righ hand corner of the scanner.







    Scan a slide or negative

      Open Image Capture

      Under scan mode, choose transparency (negative or positive)

      Set color and resolution (see above for details)

      Generally speaking, one would pick a fairly high ppi, try 1600 for a slide or negative

      Hit overview

      Alter marquee to scan only what you want

      Hit scan

      Your image should appear on the desktop

      Optimize and edit in Photoshop

Please remember to restore the scanner back for reflective use!





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