Digital BW, The Print

> >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?
> >
> >
> >
> >
> The problem is that most sensors are weakest in the blue channel... I'd
> either go with green or mix channels aftwer scanning..
>
> Just my 2 cents..

Keith,

For PMTs???  What do you mean by weakest?

Blue (and more so Red), in CCDs suffer from "smear", which basically means
they are fuzzy...and both Blue and Red have higher energy than green, which
is why they smear...

Regards,

Austin