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

NJH said:

Hi PE, this is really quite a stunning piece of information. Could you expand upon this point please, one of the reasons why I started shooting Fuji E6 was for the long held belief that colour negative film degrades much quicker than slide film. I shoot a fair bit of Provia but its got me thinking that it still isn't really a general use colour film, and perhaps I should be using Ektar instead as it benefits from much wider latitude IMHE than Provia (I do project but have more interest in prints + we often find interesting subjects with colour in them that have to greater SBR to work on Velvia or Provia). Bizarrely despite all the criticisms of Ektar colour, I find looking back through my old scans its often easier to colour balance than Provia due to the strong shadow casts on that film, so I am a big fan of how Ektar looks.

Also is there going to be a difference with commercial processing in general due to the technology and process steps vs ideal processing of C41 v E6

Thanks, Neil.

Click to expand...