[Leica] Deterioration of slide images

["John Hudson" <jahudson@direct.ca>]

This message appeared on another photo list to which I subscribe. The back
issue of Outdoor Photographer refers to George Lepp's Tech Tips column in
the December 1997 issue.

Is there anything definitive on the issue raised?


>I was just reading a back issue of Outdoor Photographer and the question of
whether the projection of slides causes
>the deterioration of an images colour came up.
>
>The belief seems to be that E-6 slides have a viewing life of about 5 1/2
hrs under projection and Kodachrome just one
>hour before damage occurs. Evidently the first colour to break down is
magenta.
>
>Obviously thats a lot of projection time as you only view slides for a few
seconds at a time usually.But it would make one think
>twice about leaving your best Kodachromes on screen while you debate how
you got the shot.
>
>I guess if there was any deterioration you probably wouldnt notice it as it
would be a gradual process.

John Hudson