Is RPL claiming that Portra 160 and Ektar are not archival?

Photo Engineer

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Neil, I cannot speak regarding Fuji film stability. I have not been involved in testing image stability personally for years and I hesitate to quote current workers directly. I was speaking of Kodak E6 films and some older or less advanced third party reversal films. Kodak overhauled all couplers for negative films in about 2000 or thereabouts to eliminate Formalin from the process and to improve image stability. They are among the most stable dyes possible, especially those in RA4 products.

Silver does NOT impact image stability. The Silver metal is in the gelatin, but the dyes are isolated in particles of oily material, protecting them from silver. All products retain some Silver metal and this is imagewise, more being in the maximum dye areas.

PE
 

NJH

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Thanks Ron, your point about retained silver, really the key to this whole thread. Thanks again.
 
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