You should not be leaving the white point at 0; the default is 1. Leaving the white point at 0 will result in a very dark image indeed. The Black point's default is 0.
Time consuming or not; if you want good scans, you need to make required adjustments of settings on a slide by slide basis before doing the final scan unless you plan to merely scan and output the data via a raw lineal TIFF file to some image editor where you will make the needed adjustments. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Nagaraj, Ramesh Sent: Friday, September 19, 2003 10:56 AM To: [EMAIL PROTECTED] Subject: [filmscanners] RE: 2 vuescan questions 1) I do leave Black & White points at 0. Its really time consuming to set those values for each slide, so I will leave at defaults. I too would like to know other experienced user's opinion on it. 2) Try using "Image" in "Input" tab Thanks Ramesh -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of James Gaa Sent: Friday, September 19, 2003 1:22 AM To: Nagaraj, Ramesh Subject: [filmscanners] 2 vuescan questions I have two questions about using vuescan. 1. Some people in the recent discussion on 8 vs. 16 bits have mentioned the histograms in vuescan. In my experience, the preview histogram is not very useful for what I would have thought was a primary use: setting the whitepoint and blackpoint. For example, if I adjust these points so that the histogram stretches almost all the way across the graph, I find that the scan image has black in it, as indicated by turning on the switches to show black and white areas. In short, the preview histogram looks right, but the scan doesn't; and I haven't found empirically a way of reliably fudging the blackpoint adjustment. The default blackpoint is zero, I believe (I'm not at the machine that has Vuescan); but using it seems to leave a lot of "space" on the left, at least according to the histogram. This occurs on slides that are properly exposed, both visually and according to the histogram (i.e., no unintended areas of black or blown-out highlights. Am I doing something wrong? Should I just go with the defaults? 2. I occasionally scan slides (using a Nikon IV-D) that have a good deal of orange and colors close to it, expecially orangey rust. I haven't found a way of setting the options in Vuescan to produce a scan that matches the slide closely. The problem seems to exist only when there are large areas of such color. Any suggestions? Jim Gaa ---------------------------------------------------------------------------- ------------ Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body ---------------------------------------------------------------------------- ------------ Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body ---------------------------------------------------------------------------------------- Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body