Lachlan Young
Member
No, that was one of them. The other was regular reversal.
Having found the paper that was given at the 2006 ICIS conference that Ron attended and discussed the outcomes of on here, it's actually effectively a negative working emulsion that when given extended thermal development undergoes direct reversal. The two patents referred to in the paper are here and here and go into more detail about the inventors' conjectures as to the processes at work.
There's also a paper from the same conference on Provia 400x and on Fuji's 'Image Intelligence' software. Like many of these papers given at imaging conferences, they tend to give hints rather than disclose directly.
The film version of a Club 27 member... I didn't discover photography as a hobby until well into the digital age (and it was digital that triggered it). In my previous life I had only ever known the output of pedestrian color negative films Does it mean that previous 400 speed slide films were rather flat and boring? I guess the chances are very slim that EK is still capable of making a totally new film like 400X?

