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Scanned slides too small for Nero Slide Show

Discussion in 'Digital Photography & Imaging' started by cullism, Nov 8, 2007.

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  1. cullism

    cullism Thread Starter

    Nov 1, 2007
    I recently bought a new Canon 8800F scanner so that I could scan a few hundred of my old slides. After successfully scanning and enhancing them I downloaded them to my camera's SD stick and had them printed post card size using a machine at K-Mart.

    When I added them to my pre-existing Nero Slideshow I was disappointed to find that when Nero expanded them to fill the screen they were totally blurred. I realised that the scanned slides images were tiny (3cm x 2cm), which was the problem.

    Does anybody know how I can resize the image to about 19cm x 12cm without incurring blurriness?
  2. lister


    Aug 10, 2004
    Scan the slides at a far higher scanning resolution than you would for say a photograph - 2400 dpi maybe?

    However, if it is just for viewing onscreen then 19cm x 12cm has no meaning, it's the pixel dimensions that are important.
  3. fairnooks

    fairnooks Banned

    Oct 1, 2007
    How long is a slide on its longest side? I'll use 5 cm as guestimate and example. Ignore the shorter side.

    The scan resolution calculations:
    For printing, 120 dpi per cm, for screen 40 dpi, so always use 120 unless you know for sure you'll never make a print. So if you wanted to make a clear 18 cm print (approximately 7x5 inches), you need 18 * 120 = 2160 pixels of resolution.

    therefore 2160 / 5 = 432 >>scan the slide at 450 dpcm (edited)
  4. cwwozniak

    cwwozniak Trusted Advisor Spam Fighter

    Nov 28, 2005
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    For TV viewing (in the USA) the images should be about 640x480 pixels in size. As lister said, for on screen viewing it is the number of pixels in each direction that counts, not the physical size in cm or inches.

    450 Dots Per Inch Per Centimeter, uh?
  5. MysticEyes

    MysticEyes Banned

    Mar 30, 2002
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