[filmscanners] Re: Software dust removal

["" <jphipps@kodak.com>]

I suggest you look for any detail removed with Digital ICE because there
will probably not be any detail removed. The reason the image may look
less sharp is because the eye is being tricked by the surface defects
(dust, scratches, etc.). There shouldn't be any residual silver in C-41
processed film. The reason the eye is "tricked" is because the eye is
looking for the finest detail in the image to judge sharpness. In many
cases the finest details are the surface defects. When those are removed
the image appears less sharp when actually the image detail remains.

If you want the image to appear sharpen, then add artifacts through a
sharpening program. Most scanners add sharpening anyway because a scan
will appear less sharp than an image produced with a negative exposed on
paper.

Jack Phipps
Kodak's Austin Development Center
Formerly, Applied Science Fiction
Developers of Digital ICE, Digital ROC, Digital SHO, Digital GEM, Digital
GEM Airbrush




Although I'm not a big fan of some versions of dICE (due to the fact
that it can tend to soften the whole image due to residual silver
removal (which it infers is dust or dirt)), or if the IR is not exactly
tuned to the dye spectrum frequencies, it does work on most E-6
developed slides, and some Kodachrome versions.

Otherwise, I agree with the other exceptions you mention.

Art

LAURIE SOLOMON wrote:

> Two points need to be made.  One deals with one of your comments
concerning
> getting ICE.  ICE only works with color negtives or chromgenic black &
white
> films.  It does not work with silver halide films like true b&w films.
The
> second point, which is not one that addresses anything that you have
said
> but something that someone else said, deals with blowing compressed air
into
> the scanner.  This does not remove the dust from inside the scanner; it
only
> moves the dust around inside the scanner.  Moreover, the compressed air
> blast can damage fragile innards of the scanner as well as create
> condensation inside the scanner which will eventually produce moisture
on
> the electronics and water spots on optical mirrors and sensors.
>


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