On 2016-11-10 18:42:43 +0000, android said:

FYI: Colour negs from the seventies are fading badly now and slides are
fading too. Even Kodachrome. If you want to preserve your pictures then
the time to start scanning is now.

I recently scanned older Kodachromes than that and as long as they are
dark stored they hold up. But Kodachrome fades badly when projected a
lot. Ektachrome holds up better in light but not as well over time even
in the dark.
--
Michael