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]