It uses an IR scan to find imperfections on the surface of the film. The IR is messed up by B&W negs unless they are C41 due to the silver in the emulsion blocking or distorting the rays. I don't think it works with Kodachrome either.
It really is fantastic, and has a marginal negative effect. But it DOES soften the image. It is so slight that you can generally scan without worrying about that though. At 4000 dpi, I find it hard to do without it. GEM uses the info from the IR too, to decode the film grain pattern and can really help with faster films to reduce the grain - will worth it sometimes. > -----Original Message----- > From: Shel Belinkoff [mailto:[EMAIL PROTECTED] > Sent: 17 January 2004 17:23 > To: PDML > Subject: OT (but what isn't): Digital Ice` > > > The other day I saw how Digital Ice can remove imperfections > when scanning. What wasn't clear to me is whether using DI > in any way "softens" the image. As it was explained to me, > it shouldn't, but the fellow doing the explaining was new to > the technique himself, so I thought I'd ask here. > > Also, I've heard the DI does not work well with conventional > B&W negatives. Is that the case? And, while on the subject > of B&W negatives, is it true that B&W does not scan well? > Last year I scanned quite a few B&W negatives and they > looked fine to my uneducated eye. > > The scanner used in both situations was the Nikon Coolscan > IV ED super duper high end model, 4000dpi (sorry, I can't > keep track of all the model numbers). > > shel > photographe au ch�mage > >
