Re: filmscanners: Re: Nikonscan v VueScan

["Maris V. Lidaka, Sr." <mlidaka@ameritech.net>]

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" <Jawed@cupidity.force9.co.uk>
To: <filmscanners@halftone.co.uk>
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: owner-filmscanners@halftone.co.uk
| > [mailto:owner-filmscanners@halftone.co.uk]On Behalf Of Maris V. Lidaka,
| > Sr.
| > Sent: 22 November 2001 17:50
| > To: filmscanners@halftone.co.uk
| > 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" <Jawed@cupidity.force9.co.uk>
| > To: <filmscanners@halftone.co.uk>
| > 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]
| >
| >
| 
|