poita said:
mikeaz123 said:
I've never heard of an IB print fading; I've had trailers from the 50's that look perfect, and there's stuff dating back to the 30's on nitrate that's supposed to look outstanding. IB matrices can widely vary though. I've had 3 or 4 prints of Thunderball over the years, and only 1 had perfect color registration. The others were off. I don't think that was due to fading, but more due to processing.
They definitely fade, just nowhere near as fast as other stocks. in 1996 I had two IB prints to work on for a restoration, both struck one after the other in 1972, one had faded noticebaly more than the other. One had been kept in a temp controlled film archive, the other in the general office area in a desk. If kept well, the fading over a decade or three is pretty minimal, but eventually all things chemical change with time.
I'm inclined to agree with mikeaz123. IB prints are non-chemical in nature. They are printed in full daylight, lithography-style on a clear (or "blank") piece of polyester film (or celluloid, pre-1950s). There's no such thing as IB "stock" because IB prints do not have an emulsion layer of chemicals & they don't have to be "developed" by dunking them into various photo chemicals, like color film stock does.
Everything ages, of course, but IB prints age in a totally different way from Easmancolor prints because they were made in a totally different way.
Some Technicolor labs got sloppy near the end, and put out greenish prints (there are some prints of Cabaret that suffered from this), but that was from errors in the initial printing, not due to age-related fading.