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i think this is posterization, produced somehow from contrast manipulation in PS. I have had something similar occur when i play with 'curves' in such a way that there is a flat spot, or a recurved spot along the curve. I have also had it happen when i got to the limits of contrast correction using 'levels', especially in 8 bit. ted ----- Original Message ----- From: "Jim Allen" <JAllen@NortechVentures.com> To: <firstname.lastname@example.org> Sent: Friday, March 15, 2002 5:30 PM Subject: Tech Pan Sample > Dear group, > > Ted offered to help me with an issue that I have scanning Kodak Tech Pan > film on a Nikon LS-2000. Therefore, I did some test scans to send to him > for his opinion, but I thought I would also solicit opinions from others in > the group. I have two samples. These are sections of scans from 35 mm Tech > Pan. One was scanned with NikonScan 3.1.0. The other was scanned with a > demo version of Silverfast. In each case, I did the simplest scan possible > using 12 bit depth. There was no sharpening. The scans were done as RGB, > since I have found that better than grayscale. Normally, I would then > convert to grayscale in PS, but in this case I have left them as RGB so that > you can see the color cast as well as the "mottling" effect that I have > referred to. > > OK, so if you go to the link you will find thumbs and sections were I cut > part of the scan out and saved it as jpg file. The effect that I am > referring to is a non-smooth transition from light to dark. You will see it > most pronounced in these on the lower hip of the model. (Yes, these were > done intentionally as very high contrast.) > > I left the color to give any clues, but the effect is still there when > converted to gray. Any thoughts would be appreciated. > > These are about as mild as it gets, but if you are under 18 or offended by > artistic nudity, then do not go there. > > www.singularimages.com/Scan_Samples.html > > Thanks for any help. > > Jim > > > > - > Turn off HTML mail features. Keep quoted material short. Use accurate > subject lines. http://www.leben.com/lists for list instructions. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.320 / Virus Database: 179 - Release Date: 1/30/2002 - Turn off HTML mail features. Keep quoted material short. Use accurate subject lines. http://www.leben.com/lists for list instructions.