On Thursday 15 July 2004 22:52, Major A wrote: > > Since a week I'm experimenting with a nikon coolscan LS 4000 ED. Using > > sane, xsane xscanimage I find it realy difficult to get good scanning > > result concerning color. I'm scanning color slides (dia). I tried > > different settings, the automatic exposure etc. Unfortunatly without > > good result. So I gave up. > > > > I have general good succes with vuescan. So it is not the scanner. > > Therefor I'm looking for propper settings to use with the coolscan LS > > 4000 ED. Is there someone who would like to share? > > The scanner requires proper colour balance and gamma settings. Colour > balance is usually achieved by doing an AE with WB (for slide film), > then you can adjust the exposure multiplier to fill the histogram as > efficiently as you can. Finally, adjust gamma to suit your > requirements. I use a gamma between 2 and 3 almost all the time, 2.4 > is normal, higher values are useful for certain films such as Kodak > P1600. > > This goes for all Coolscans, BTW, I guess VueScan just does some of > this automatically. must be something like that. It is doing a good job. Also the automatic start on insert of a slide I like. > > Andras
What are your exposure times? after the AE with white balance I'v got: red: 1014 green: 740 blue: 480 multiplier: 1.7 (or I got over exposure and no details in high lights) gamma: 2.4 brightness: 0 contrast: 0 rgb standard. Exposure time could be machine dependent. This gives me some results I can live with. Comparing to the scans automaticaly made with vuescan I maybe like the sane one better. The pictures are quite dificult with a lot of contrast in it. http://members.chello.be/~sf15556/test/testvergelijkingsane-vuescan.tar.gz Gives a quick comparesing between the 2 -- Johnny Geling
