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Re: filmscanners: Nikon 8000 ED or Polaroid Sprintscan 120 ??

The same method is described by Eddie Tapp in Scanner Dust Spotting at

He has some other good reading material there, especially 90% Method of
Color Correction NEW 9/00 which uses Dan Margulis's methods but with RGB.


----- Original Message -----
From: "Richard N. Moyer" <dickmoyer@mail.earthlink.net>
To: <filmscanners@halftone.co.uk>
Sent: Monday, February 19, 2001 2:28 PM
Subject: RE: filmscanners: Nikon 8000 ED or Polaroid Sprintscan 120 ??

| 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,
| 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
| 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
| tool to "lighten" or "darken" limits the effect to the spots you are
| at), but some debris will defeat the d/s filter (either it is just too
| 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
| 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
| >the person they took excellent care of their film and did not consider
| >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
| >shown if I take a tremendously dirty slide which I have made no attempt
| >clean the Insight dust removal appears to be about 80% as effective as
| >If I take a more realistic slide which has be cared and cleaned the
| >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
| >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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