"B&B Musmon" <> wrote in message
news:...
> Although I have had my PhotoSmart Scanner for a very long time, I have
> never scanned slides. I have an opportunity to do some work that
> involved scanning slides. Before I say I can do it, I want to make
> sure I can do it.
>
> The only slides I have are quite old. They are Ektachrome. The
> software does have a setting for Kodachrome but that doesn't scan very
> well. There is a redish shadow on every slide. I tried all the
> settings and nothing makes it look any better. I download VueScan and
> it basically looks the same.
There are two main possibilities: (a) the scanner is funky, (b) the slides
are funky.
If you look at the slides on a light box with a loupe, do they look reddish?
If so, the scanner's doing the right thing.
Here's something to try that might work.
Load the image into Photoshop, open up the levels tool, and set
the black and white points* for each RGB color individually. Then look at
the image and adjust the middle slider for each RGB color to remove any
remaining color cast. If you want to get fancy, use the curves dialog to
adjust shadow and highlight color balance separately.
*: Move the left and right end sliders so that they just touch the darkest
and lightest points on the histogram. The auto color balance function does a
heavyhanded version of this.
> I don't even know what kind of slides they want scanned but what
> should I stay away from, obviously Ektachrome is on the list.
>
> Any insight would be appreciated.
Actually, _Kodachrome_ is the one to stay away from: the dyes have weird
spectral properties that interact badly with some scanners.
David J. Littleboy
Tokyo, Japan
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