The L channel should not change colors - it is Luminosity only. The A & B channels contain the colors, so I'm mystified by what your are seeing!
Maris ----- Original Message ----- From: "Jawed Ashraf" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, November 22, 2001 7:14 PM Subject: RE: filmscanners: Re: Nikonscan v VueScan | Yes. L is quite interesting. A big move with L gets you funny colours too. | You end up having to balance a contrast change in both the L channel and the | "R, G, B" channel to get colour that doesn't go totally wonky. | | Jawed | | > -----Original Message----- | > From: [EMAIL PROTECTED] | > [mailto:[EMAIL PROTECTED]]On Behalf Of Maris V. Lidaka, | > Sr. | > Sent: 22 November 2001 17:50 | > To: [EMAIL PROTECTED] | > Subject: Re: filmscanners: Re: Nikonscan v VueScan | > | > | > Have you tried converting to LAB and then adjusting the curve in | > the L channel only? | > See the last section of http://www.ledet.com/margulis/LABCorrection.pdf | > | > Maris | > | > ----- Original Message ----- | > From: "Jawed Ashraf" <[EMAIL PROTECTED]> | > To: <[EMAIL PROTECTED]> | > Sent: Thursday, November 22, 2001 4:00 AM | > Subject: RE: filmscanners: Re: Nikonscan v VueScan | > | > | > | Yes I've tried curves of all kinds. I just wish I hadn't | > pursued the "flat | > | is best" school, because it was a very serious waste of time | > (well, OK, I | > | learnt to reject it). | > | > [remainder snipped] | > | > | |
