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
