Digital BW, The Print

> (snip)
> >
> > My particular scanner scans B&W, not as RGB, as all other
> scanners do, but
> > using a single ND filter.  I believe, from comparing images scanned on
> > various other scanners, that the scans I get from my scanner are a lot
> > sharper (and have no need to sharpen), and have better tonality.
> >
>
> Austin,
>
> I am using a Howtek D4000 for my 4x5 scans and for grayscale
> scanning I can
> choose to use any of the three sensors. I have set the software to use the
> Blue channel under the assumption that the shorter wave length
> will give the
> sharpest scan. How do you think this compares to using a ND filter?
>
> Martin

Hi Martin,

As far as tonality goes, it is going to be "different", as you are only
getting the blue info...and at the very least, your curve will be WAY off.
You'll probably be able to (assuming high bit mode) make the curves "match",
but it may take a LOT of work...

In regards to sharpness, you should be comparable (if not better, because of
higher resolution), in as such that PMT scanners do not suffer the same
issues with the red and blue channels as CCD scanners do.

You could always simply replace one of the filters with an ND filter ;-)

Regards,

Austin