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Re: filmscanners: Cleaning slides (PEC tips)





Rob Geraghty wrote:

> Jim wrote:
> 
>> PEC 12 ONLY cleans grease- based stains. It does not clean water-
>> based stains. It will remove a fingerprint but not hard water
>> stains, for example. This point has not been made yet, so I
>> decided to add to this growing thread.<g>.
> 
> 
> FWIW I tried to remove a fingerprint from a film strip yesterday only to
> find that it's embedded in the emulsion.  The operator at the lab must have
> put their fingerprint on the film while the emulsion was wet. :(  In their
> defense, it was right on the end of the film where an image *shouldn't*
> have been, but the camera had squeezed another image onto the end of the
> strip.  Hopefully I'll be able to remove the fingerprint with some careful
> use of the cloning tool.
> 
> Rob
> 

Every lab operates slightly differently in terms of how much film they 
require to do their process, but unless one has a camera with a very 
short canister lip to camera frame distance, there usually should be 
enough to avoid ruining that 37th or even 38th image.  Most of the time 
those extra frames come from the front of the roll, as some cameras, can 
be loaded to not require the full "lead" the film manufacturer's provide.

My Nikon 801s (when it is working) gives me 37 images nearly every time. 
  Some rare times I get 38, but that one is almost always bisected by 
the lab.   My Nikon FE, however, always gave me 38 full frames and 
occasionally 39, same lab.

Regarding finger prints that are on the emulsion side.  Remove the film 
from the slide holder if its a slide, and the soak the film in warm 
water with a drop or two of photoflo or equivalent, for up to half an 
hour.  The photoflo not only prevents spotting, but being a detergent, 
also beaks down some of the grease in the fingerprint.

Allow to completely dry before handling.  To dry individual 35mm film 
frames, open a plastic coated paper clip to create the elongated "S" 
shape, and put one hook through a socket hole, clipping the other with a 
clothes pin or other device.

Art




 




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