Yahoo Groups archive

Digital BW, The Print

Index last updated: 2026-04-28 22:56 UTC

Message

RE: [Digital BW] Scanning b&w negatives

2004-01-22 by Paul D. DeRocco

> From: Editor P.O.V. Image Service [mailto:editor@...]
>
> AND.. One might find that running noise reduction software on each
> channel independently COULD result in a cleaner final image than
> running it on the merged greyscale.  In fact, one might create profiles
> for each channel in Neat Image or Noise Ninja..

If the different channels have different amounts of noise by more than a few
db, then the optimum would be to take the best channel and chuck the other
two. If they're close to each other in noise level, then averaging would
help.

It's possible that different channels would have different amounts of noise,
but I would hope that the engineers who designed the scanner would have
observed this, and dealt with it in their B&W algorithm. But perhaps I give
them too much credit.

--

Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@...

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.