[Leica] What is an "archival slide"?

[stasys1 at cox.net (Stasys Petravicius)]

Piers- Thanks for the input! Stasys
On Apr 23, 2009, at 1:10 AM, Piers Hemy wrote:

> It depends.
>
> My recollection of a study bu US archivists is that if you need a 
> slide that
> with the greatest life when projected, Ektachrome is best.  If you 
> want a
> slide with the greatest un-projected life, then it's Kodachrome.
>
> To put it another way, Ektachrome last longer than Kodachrome when 
> used in a
> back-projection display panel, but Kodachrome lasts longer than 
> Ektachrome
> when stored in a cool dark dry place.
>
> In my own experience with 50 year old slides of various types (both the
> above, Agfachrom, Gevacolor, Anscochrome, Ferrania, Perutz etc), 
> Kodachrome
> is the *only* one worth considering.
>
> HTH
>
> -----Original Message-----
> From: lug-bounces+piers=hemy.org at leica-users.org
> [mailto:lug-bounces+piers=hemy.org at leica-users.org] On Behalf Of Stasys
> Petravicius
> Sent: 23 April 2009 01:02
> To: Leica Users Group
> Subject: [Leica] What is an "archival slide"?
>
> Stasys
>
>
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