I found a few interesting comments online yesterday. One was that the first 20 years for an Eastmancolor print are the worst; so does that mean that after 20 years it becomes stable?, another was, 'An Eastmancolor print can go to pink in 5 years', hence my question about stability, as I have a length of 35mm I picked up new in about 1982, it was perfect, then went red, but is still red, it hasn't gone pink. A more startling claim was that it can fade altogether, leaving you a blank film. I know red is the most unstable of colours, and fades in daylight, but has anyone had any experience of a film fading away?
Another statement that was new to me was that Ektachrome and Agfa reversal film both turn Magenta, with Agfa claimed to be the worst. Last time I checked any of my home movies the colours looked the same as the day I got them back from processing; neither Agfa or Ektachrome 160 had the strong colours of Kodachrome.