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Re: Little white spots and static electricity


  • From: aeophoto@xxxxxxxxxxx
  • Subject: Re: Little white spots and static electricity
  • Date: Thu, 09 Apr 1998 06:19:35 GMT

On Thu, 09 Apr 98 15:07:18 +1000, Peter B wrote:

>
>
>This is an interesting theory Angela.  Static electricity can be generated by 
>friction between two bodies.  Eg. the Film(polyester) and the changing bag.  Or 
>the film and the (plastic)take-up spool.  And the amount will depend on a few 
>factors too, such as : how humid the surrounding environment is (ironically DRY 
>is worse than wet), what the two bodies are made from, and how fast they are 
>rubbed together.
>
>A static electricity discharge, onto the film, even too small to hear could 
>easily do damage to the film's surface.  If you need to know how much the 
>environment may be prone to static , take off a sweater inside in a room with 
>all the lights off, and if it's dry enough then watch/hear those sparks fly.
>
"Darkroom Dynamics" suggested gently wiping photoflo on your camera's
pressure plate and letting it dry.  It said this would solve your
static electricity problems for approx. 3 months.

Angela
aeophoto@xxxxxxxxxxx
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