Archived posting to the Leica Users Group, 2001/07/26
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>>OK, now that we have had scanning epistemology, ontology, and a Great >>Schism over the hermeneutics of The Book of Nyquist, how 'bout some nuts 'n >>bolts? >> >>Hear ye, hear ye, all ye good folks who scan black and white *film*. Do >>you use "real" B&W or chromagenic film? I'm particularly interested in >>people who use film scanners and real black-and-white. Have you had >>problems with grain aliasing? If so, what scanner do you use, what's its >>resolution, and what do you do about the aliasing? Defocus? Scan at lower >>resolution? Limit the size of your prints? Wave chicken entrails over >>your head in a paper bag at midnight? >> >>--Peter Peter, I have scanned B&W film and printed it, but I decided that I liked the wet Darkroom better for it, so the scanner (Canon FS2710) and printer (Epson 1160) replaced only my color processing. In my case the printing of slides to 16x20 format prints. I experience grain aliasing. Most of my slides are Kodachrome, which are more sensitive to it then ektachrome type slides. Because there is no way to prevent it or solve it, you have to live with it. There are a few things you can do, to reduce the effect, FE a small amount of defocusing. I stopped using sharping techniques on the scans, because that enhances the problem. Although with Kodachrome 200 scans, I sometimes sharpens because it results in a very pseudo grainy image resembling a harsh overdevelopped tri-x look. Further, I'm saving my money to upgrade to a 4000dpi scanner. Some information about this phenomen can be found at: http://www.photoscientia.co.uk/Grain.htm Meino de Graaf