Twenty years ago, the Lab that I was working for sent me to take the Kodak seminar on E-6 process control at their offices in Manhattan.

The instructor was their top Tech Rep at the time and at one point he told us that every time Kodak made an improvement to Ektachrome, they did a major side by side evaluation and comparison to Kodachrome in an effort to justify discontinuing the K films and process. They never could.

If that was true, and they have looking for an excuse to toss Kodachrome for that long, it is a miracle that it has survived for this long.