The way I understand scanners is that adjusting the brightness of the
image is just a software adjustment of the driver. You get the same
basic raw scan each time. You can't adjust the lamp brightness. There
is no aperture. So do one scan. Make a duplicate in Photoshop and
adjust one for highlights and the other for the shadows.
Winsor
Long Beach, California, USA
On Oct 13, 2004, at 4:12 AM, James Royall wrote:
>
> Thanks for that Graham. Looks fairly straightforward *in principle*! So
> I could then take a step further by scanning in Vuescan twice, once
> with a higher brightness setting to bring out the shadows and then
> combine theses two images having made any adjustments to the shadows
> layer to give a natural match to the highlights layer?
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