Scanning slides or negatives at 4000 dpi on this scanner - as I zoom in I
lose detail in multi colour speckly effect. How can I tell if this is film
grain or noise/problems with the scanner?

"John" <(E-Mail Removed)> wrote in message
news:lBRqc.347$M_4.83@newsfe1-win...
> Scanning slides or negatives at 4000 dpi on this scanner - as I zoom in I
> lose detail in multi colour speckly effect. How can I tell if this is film
> grain or noise/problems with the scanner?

Make two identical scans of the same crop. The difference is (almost
exclusively) noise.

Bart