Digital BW, The Print

----- Original Message ----- 
From: "peter_in_seattle" <lists@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Thursday, June 19, 2003 9:20 AM
Subject: [Digital BW] Re: Vuescan Profiles


> Stan,
>
> Can you please explain how you set Vuescan to capture all the
tonal range of the
> image? Also, if it's not too complicated, how do you adjust the
curves in Photoshop?
>
> I use Vuescan with a Polaroid SS4000, and I've been about ready
to give up on
> Vuescan lately, because I do get very inconsistent scans,
especially with color slides
> (media type set to Image). I get one nearly perfect one, then
> one too yellow, too green, or much too contrasty, or more than
one of those. I can't
> figure out how to tweak what I see in the histograms, other
than changing the
> selected Image Curve on the Color tab. The various Brightness
and Black & White
> Point adjustments are a mystery to me.
>
> I thought maybe the problem was a scanner calibration issue...
I was thinking of
> going back to Silverfast, which came with an IT-8 calibration
slide. The problems
> have really made me frustrated with the whole process of
scanning. And the
> inconsistency seems to mean that I can't really do batch scans,
even from the same
> roll of film.
>
> Peter

Peter,

One other cause could be that your setting of "buffer" in the
"crop" menu doesn't correspond with the way you normally crop. In
default it is set at 15% meaning that at a border of 15% of the
cropsize there's no measurement done for the exposure etc. I
usually scan beyond the frame so that setting is alright for me.
If you however crop more, then it could influence the
exposure,especially with important colour information at the
edges. You should then lock the preview exposure of the total in
the "input" menu and/or set the buffer percentage lower.

Vuescan has features for scanner profile creation so with the IT8
target you already have it is quite easy to profile the scanner.

Ernst