[filmscanners] RE: Scanning a foggy image

["Paul D. DeRocco" <pderocco@ix.netcom.com>]

Fog isn't noise, it's a reduction in contrast due to adding a certain amount
of diffused light on top of the rest of the image. The only way I can
imagine a scanner reducing fog would be if it increased the contrast. You
may be able to get it back by opening Curves and lifting the bottom left end
of the curve up a bit.

Another possibility is that the monitor isn't calibrated quite right, and
it's chopping off the darkest end of the scale, thus increasing the
contrast.

--

Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@ix.netcom.com

> From: Brian
>
>     OK, let me ask a question. I have a rather nice slide of a boat dock
> with some small boats moored which I took up in Maine. There was a slight
> fog/mist in the air when I took the shot. A print made from the slide
> captures the foggy nature of the composition nicely. However,
> when I scan it
> (Nikon Coolscan 4000) using ViewScan, the scanner/software seems to
> interpret the fog as noise(??) and produces a scan with more clarity than
> the original image has.
>     My question is, how do you scan slides or negatives which are somewhat
> soft with fog or mist and retain the look of the original scene? Failing a
> scanning solution, is there a tweak I can do in Photoshop to get the
> appearance back? I've been doing this for about a year so I'm not real
> experienced by I have learned quite a bit reading the emails on
> this group.

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