"Richard K. Holman" <[EMAIL PROTECTED]> wrote: "I thought Ilfochrome
Classic (not the standard ilfochrome) was rated to greater than 200
years. The basic ilfo's are rated for much less."
My memory is fading faster than a print from a cheap inkjet, so it may
be that my recollection of the data from the Wilhelm site is faulty.
However, you might find this interesting:
Below is an excerpt from the Color Print Paper (Type R from slides)
Section of "The Permanence and Care of Color Photographs: Traditional
and Digital Color Prints, Color Negatives, Slides, and Motion Pictures",
by Henry Wilhelm and Carol Brower (1993; ISBN: 0911515003), via
http://www.photo.net/photo/wilhelm-book.
"Ilford Ilfochrome [Cibachrome] are the only products that can be
considered to be absolutely permanent in DARK [my emphasis] storage at
normal room temperatures. . . Fujichrome Type 35 paper is by far the
best choice among Process R-3 reversal papers. With its good dye
stability and low stain level in dark storage together with good light
fading stability, this is the slide-printing counterpart to Fujicolor
SFA3 papers for printing color negatives. It should be noted, however,
that although Fuji SFA3 and Type 35 have similar dark storage stability,
SFA3 paper is much more resistant to light fading on display. For that
matter, the light fading stability of Fujicolor SFA3 paper is
significantly better than that of current Ilfochrome prints!"
Note that, since the above was written in the early nineties, I'd guess
that it refers to the "Classic" flavor of Ilfochrome, and that the Fuji
papers mentioned did not have display properties comparable to the
Crystal Archive products, which are of more recent vintage.
Brian Walsh
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