RE: filmscanners: Scratched Negs & Home C-41 processing

[Roger Smith <rsmith@unb.ca>]

At 4:19 AM -0500 1/24/01, Tim Victor wrote:
>  > I've even had a color
>>  roll with this problem developed the same day and dried in the same place
>>  and time as a black and white roll that didn't have any problem. I don't
>>  know if something about the color film just attracts dust more or what.
>
>Interesting. Do you have any sense of how much contrast the black &
>white negs had and how they compared to the color? I've got that idea
>on my brain now. It seems like the specks will be most noticeable on
>a negative that doesn't have a whole lot of contrast, where they're the
>darkest spots in the frame and they get clipped to pure white in the
>final image. Just a theory though...
>
>>  Since I can't easily clean off these "specks," I'm still not 100% convinced
>>  that the problem I'm seeing is actually dust. After I get home from work
>>  tonight, I'll scan a frame with this problem and post it on the web so you
>  > can see what I'm talking about.


        Does colour negative film have a softer emulsion layer (when 
wet) than B&W? Maybe the dust sticks more to colour negs, and is 
actually embedded in the emulsion.

Roger Smith