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Re: filmscanners: Infrared scan

Some of the image details may be as small as the non-image details that you
don't want, so you can get either both or neither.


----- Original Message -----
From: "Richard N. Moyer" <dickmoyer@mail.earthlink.net>
To: <filmscanners@halftone.co.uk>
Sent: Sunday, June 10, 2001 10:58 AM
Subject: Re: filmscanners: Infrared scan

| If you purchase a high resolution scanner which now is prone to give
| you image artifacts generated by a micro bleb or dust particle (see
| ragged edges - below) on the film, and then negate the high dpi by
| applying ICE which - in effect - smoothes (or smears) the entire
| image (like blurring in PS), what have you got for all that effort
| and expense? Something doesn't compute. It would seem that you don't
| want a scanner or scanner settings which resolve and portray
| non-image details. You do want higher dynamic range (unrelated to
| high dpi?) to get shadow detail, but what do you really get beyond
| that? Except huge files.
| And then you hear that with these huge files you can print huge
| pictures. With smeared pixels? With dust artifacts?
| Someone please comment on this with more common sense than I appear
| to have this morning.
| >In a message dated 6/9/2001 10:31:44 AM EST, michael@shaffer.net writes:
| >
| >>  Exactly ... and the softening can be obvious with the Nikonscan
| >>   version of ICE.
| >
| >The root of the problem with NikonScan is that there are ragged
| >edges around dust spots after applying the ICE correction using
| >the infrared channel.  The ICE algorithm applies a smoothing
| >filter over the whole image to smooth out these ragged edges
| >around dust spots, while VueScan only does the smoothing in
| >the immediate vicinity of the dust spots.
| >
| >>   it seems to me someone complained
| >>   about Vuescan's "clean" function again softening in early versions of
| >>   v.7.  I believe Ed admitted as much and promised a fix.
| >
| >I fixed this quite a while ago.
| >
| >Regards,
| >Ed Hamrick


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