Re:plus density/ pinholes

[Greg Pease <gpp@xxxxxxxxx>]

>Hmmmm...what is confusing to me, is that usually the film is loaded onto
>the reel and placed in a light tight tank.  If light fogging were causing
>this, why wouldn't the whole roll be affected?  I must be missing
>something here.  The reel shouldn't be generating light inside the tank!

>I'm somewhat confused by this. If the film was developed in an IR-opaque
>tank, what difference could a plastic reel make? How could the plastic reel
>touching the film cause fogging if there was no infrared or other light
>coming in-


from what i was told by kodak, the plastic reel absorbs the ir when it is 
just hanging out in the daylight.  then when you load your film onto it 
the ir radiates to your film.

>The "scum" will absorb the surfactant and then "dry" When the developer is
>poured in the surfactant is now "activated by the developer solution and
>thus reducing the surface tension of the developer solution in close
>proximity to the reel.


wouldn't the reduced surface tension create a minus density (not a plus) 
where the reel touches the film?
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