Scans of 35mm slides are mostly red. How to fix?

Discussion in 'Scanners' started by Gary, Feb 20, 2006.

  1. Gary

    Gary Guest

    If I scan my slides that are plastic mount, there's no problem. But if
    the slides are cardboard mounted, the image comes out mostly red. The
    blue channel is almost totally black. Using a Visioneer 9020 USB. Any
    idea? Why are the plastic mounts OK, but the cardboard ones aren't?
    Gary, Feb 20, 2006
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  2. Gary

    catfish Guest

    assume windows O/S, but what version and service packs?

    what scanning software?

    are plastic mount slides ektachrome, kodachrome, or something else?

    are cardboard mount slides ektachrome, kodachrome, or something else?

    don't bother replying to
    or even
    just reply to the newsgroup and i will catch it there
    catfish, Feb 21, 2006
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  3. Gary

    Kirk Guest

    Are the plastic and card mounts of a different colour- like the card ones
    white, plastic black- If so it could be the black level sensing is done just
    'off' the image and is being affected by the colour of the mount.
    Scan a slide with a plastic mount, and then tick the box marked something
    like 'exposure lock' and try a card one.
    Alternatively find a plastic one with a 'duff' image that you can scrap, and
    swop the slide from the card mount to the 'temporary' plastic one.
    Kirk, Feb 27, 2006
  4. Gary

    Kirk Guest

    Try a different software program- I would recomend Vuescan ( download the trial version which works , except it
    has 'demo' or something across it- that's where I got the exposure lock
    from. I used a Nikon Coolscan with an older version of Vuescan, 'fiddled'
    till I got the first one near enough correct- ticked the lock exposure box,
    and then scanned the rest of that film at those settings. A slight tweak in
    photoshop completed the scans first class.
    Vuescan takes a bit of getting used to , to start with as there are some
    many variables and options, but you can save the options set ( go to File -
    Save settings) as you go along- its easy then to have a further tweak, and
    go back if it fails to the saved settings.
    I'm at a loss to see why the difference with your current scan problems
    Kirk, Feb 28, 2006
  5. Gary

    Robert Guest

    Cuase they are different ages and/or brands.

    Red tint is a standard degradation of cheaper slides.

    After scanning several thousand slides for my in laws (from the
    1950s -1990s) I got to say only buy Kodak. :)

    All the off brand ones were either faded out or red tinted.
    Robert, Mar 4, 2006
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