Filmscanners mailing list archive (filmscanners@halftone.co.uk)
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Re: filmscanners: Nikon 8000 ED or Polaroid Sprintscan 120 ??
If you can get a scanner with an IR channel, ICE or Vuescan seem a lot easier to
use than that description.
Gordon
"Richard N. Moyer" wrote:
> Removing dust from digitized images:
> This is a quote from another poster (elsewhere - not this list, and I
> don't have the author since I clipped the quote) regarding the use of
> PS and the History Brush in PhotoShop:
> " - - working with a 16-bit file -
> 1. do your initial color space conversion (if necessary) and an initial
> levels/ curves adj
> 2. save a snapshot of current state
> 3. run dust and scratches (See Filters), checking the preview to make
> sure most of the
> debris is caught by the filter
> 4. create a snapshot of the dust and scratches state, set it to history, and
> revert to the previous snapshot
> 5. select the history tool and set it to lighten (if using transparency
> film) or to darken (if using neg film); if you have a palette set options so
> that pressure in "on" for size and "off" for opacity' set opacity to 100%;
> choose a soft brush
>
> The history brush should now work to remove most of the debris (setting the
> tool to "lighten" or "darken" limits the effect to the spots you are aiming
> at), but some debris will defeat the d/s filter (either it is just too much
> for the settings you chose or is in an area where the contrast just isn't
> enough for the "lighten"/ "darken" brush mode to work properly). For these
> occasional spots I use the rubber stamp tool, reversing the palette options
> so that opacity is set to "pressure" and size is set to "off."
> end of quote -
>
> >In researching for the SS120 we asked medium format users about features
> >including the various dust and scratch solutions. They said pretty much to
> >the person they took excellent care of their film and did not consider dust
> >to be a problem. They said they would rather address dust with localized
> >Photoshop work rather than a global system they perceive as softening the
> >entire image.
> >Polacolor Insight has software based dust removal. My personal testing has
> >shown if I take a tremendously dirty slide which I have made no attempt to
> >clean the Insight dust removal appears to be about 80% as effective as ICE.
> >If I take a more realistic slide which has be cared and cleaned the results
> >are much closer.
> > I also polled several Imacon d
> >dealers to see if any of their customers have requested hardware dust
> >removal solution. They responded they have never had a single request. I
> >don't think Heidleburg has it on their drum scanners. I also noticed at PMA
> >that Imacon was demo'ing dust removal in Photoshop using the history
> >palette. Pretty neat.
> >All that being said if we did have ICE it would be easier at the point of
> >sale but I don't know how much better a scanner it would be..> >David Hemingway
> >Polaroid Corporation
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