scanning yearbook picture

Discussion in 'Photoshop Tutorials' started by Tim923, Sep 15, 2006.

  1. Tim923

    Tim923 Guest

    What settings should I use when scanning a picture on a page of a

    Dots per inch?
    Tim923, Sep 15, 2006
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  2. Tim923

    Sam Guest

    at a setting which reduces the screen used in the printing of the year book.
    Sam, Sep 15, 2006
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  3. Tim923

    Kingdom Guest

    try 600 and resize in photoshop
    Kingdom, Sep 15, 2006
  4. Tim923

    Tim923 Guest

    try 600 and resize in photoshop

    There is a descreen option. I could scan at high res and resize down.

    Something else I wondered. Is it best to resize by powers of 1/2?
    With 50%, I see how each adjacent 4 pixels are neatly combined into 1.
    And the same with 25%. Maybe it doesn't make much difference when
    there are lots of pixels involved, but what happens when a smaller pic
    (maybe 100pixels x 100pixels, or 200x200) is resized to some arbitrary
    percentage, mayb 83% or 57%. Maybe I should try this to see how
    natural it looks.
    Tim923, Sep 15, 2006
  5. Tim923

    Mike Russell Guest

    The big headache with yearbook pictures is the halftone dots.

    The best solution I've found is to scan at a fairly high resolution - 300 to
    600 pixels per inch, then use the freeware FFT plugin to remove the dots
    while preserving detail reasonably well. Once you have a good image, resize
    to your pixel dimensions if necessary.

    Here's an article I did some time ago that shows how to do this. Scroll
    down to the example with the picture of the wrench to see what this method
    will do. Later there is a discussion of how to use this plugin in Elements
    as well as Photoshop.
    Mike Russell, Sep 16, 2006
  6. Tim923

    Tim923 Guest

    These are B&W yearbook photos on the paper I'm interested in, and not
    color. I don't know if that makes a difference?
    Tim923, Sep 16, 2006
  7. Tim923

    Mike Russell Guest

    The FFT method will work with either color or B&W. The example uses a B&W

    One thing to notice is the writing on the handle of the wrench is clearer
    after the dots have been removed. AFAIK, retaining or even slightly
    clarifying detail is unique to using an FFT operation to remove the dots.
    Mike Russell, Sep 16, 2006
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