RE: filmscanners: VueScan and highlight/shadow pixel clipping--wh y? (SS4000)

[Alessandro Pardi <alessandro.pardi@inferentiadnm.com>]

Stan, Leif,

I think you shouldn't use 0% for the white and black point, as this sets the
deepest shadows to 0 and the brightest lights to 255, and may result in
clipping. My usual settings are 0.1% for the black point and 0.5% for the
white point, but I seem to remember a post by Hamrick about this, so you may
want to dig in the archives.

Alessandro Pardi

> -----Original Message-----
> From: Goodwin, Leif [mailto:Leif.Goodwin@racalinst.co.uk]
> Sent: giovedì 22 novembre 2001 08.15
> To: 'filmscanners@halftone.co.uk'
> Subject: RE: filmscanners: VueScan and highlight/shadow pixel
> clipping--wh y? (SS4000)
> 
> 
> Stan. I see the same with Vuescan and the Microtek 4000T 
> scanner. Don't know
> why. Leif. 
> 
> > -----Original Message-----
> > From:       S Schwartz [SMTP:snsok@swbell.net]
> > Sent:       Thursday, November 22, 2001 3:27 AM
> > To: Filmscanners (E-mail)
> > Subject:    filmscanners: VueScan and highlight/shadow pixel
> > clipping--why? (SS4000)
> > 
> > I posted this question a few days ago but got no response 
> so I am posting
> > it
> > again.
> > 
> > I like using VueScan with my SS4000 scanner but I am 
> consistently seeing
> > highlight and shadow pixel clipping on my transparency 
> scans. When I use
> > Polaroid's Insight software for scanning, I get a nice 
> histogram with no
> > pixel clipping.
> > 
> > I have tried Vuescan with 0% white point and 0% black point 
> and still get
> > the same clipping. I am using ordinary settings on the color tab:
> > brightness
> > 1.1, gamma 2.2, etc.
> > 
> > Any reason this is happening?
> > 
> > Stan
> 
> 
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