A while back I had a similar difficulty with some other scanning software. I found that by scanning the film as a positive rather than a negative the software's notion of black/white points was much better -- especially in the thin regions of the negative.
Roy On Saturday, March 26, 2005, at 12:00 AM, David J. Littleboy wrote: > > From: "Austin Franklin" <[EMAIL PROTECTED]> >>>>>>>>>>>>>> > At this stage, you don't expand anything. You set your setpoint so > that you > only USE the valid image data within the overall range. Therefore, > say, > your scanner is 10 bits, and therefore gives you 0-1023...and your > image > data occupies the range of data from 233-876, you set your setpoints > at 233 > and 876, and take THAT data and "remap" it to 8 bits. In this case, > it is a > decimation, and it is rarely an interpolation, since the valid data > region > is almost always more than 8 bits. > <<<<<<<<<<<<<<<< > > I understand that that's the theory, but when I scan negatives on my > Nikon > 8000 with NikonScan, it clips either the lows, highs, or both. > > It gets the black point increadibly wrong, but that I can deal with. > > Do you (or anyone) know how to persuade NikonScan to distribute the > range of > values from the scan within it's actual range without clipping? Once I > have > that, I could scan at 14 bits, 4x or 8x, and set black/white points > and futz > with curves in PS (well, PWP) later. Sigh. > > David J. Littleboy > [EMAIL PROTECTED] > Tokyo, Japan > > > ----------------------------------------------------------------------- > ----------------- > Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe > filmscanners' > or 'unsubscribe filmscanners_digest' (as appropriate) in the message > title or body > > - Roy Harrington [EMAIL PROTECTED] Black & White Photo Gallery http://www.harrington.com ---------------------------------------------------------------------------------------- Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body
