I have detected dark stripes in some of my scans. Very likely the stripes are al ways present but only visible under certain circumstances. My scanner is a Micro tek ScanMaker 5 used at 1000 samples per inch on 4x5 Velvia among other films. W ith this scanner the CCD's step across the short side of the film, (that is, the array is across the long side) and the stripes are parallel to the long side ab out every 120 pixels and are roughly five pixels wide. The stripes only show in the sky and where the sky very cloudy but bright. The scanner reports the number s as 249, 255, 251 for R, G, and B respectively on a chrome I was working on tod ay. Visually, this sort of chrome shows a totally dead white sky; PhotoShop can find some texture but it also finds these stripes. The only thing I can think of is that the stepping motor is stalling slightly every 120 pixels (or every 0.12 inches) and burning those pixels a bit darker. So far, Microtek has been no hel p. Does anyone have any ideas?
Bookmarks