So, I've been working on some scanned negs, and noticed some "junk" in the deep shadows. I'm not sure if it's just schmutz picked up over 3+ decades, stuff from less than perfectly clean processing, or scanner noise.
I've never seen scanner noise (that I know of), don't know what to look for, etc. Can someone explain what it looks like in a scanned image? Where does it come from? How can it be reduced or eliminated in the scanning process (apart from anti-noise software being used after the fact). Thanks ... shel the ignorant
