P3D Re: Kodachrome life (PHOTO-3D digest 3482)

["John Goodman" <jgood@xxxxxxxx>]

Bob Howard wrote, in part:

> While most people report Kodachrome 
> 60 years 0ld (e.g 1939-1999) as having original color. The comment 
> about splotches etc. is, as noted later, fungus and mold.

May very well be the case...  I was imagining a purely 
chemical reason, since what I saw was always the same 
cyan color, and there was no evidence of spores, dust, 
smell, or moisture marks. If living creatures are 
responsible, they must have a narrow appetite for a 
particular dye or something within the film layers. The 
damage seems to be confined to certain rolls, so I 
guessed that something wasn't quite right with the 
chemistry, or that the paper of those particular mounts or 
the box they were stored in was a contributing factor. This 
was a fairly rare phenomenon with the slides I viewed, 
thank goodness.

JG