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All Film Guys,
After the recent, and on-going fiasco with Kodak
Supra 400 Film changes, I just discovered that Fuji Provia 400 changed sometime
last year. This change looks like it was for the good!
A message from John Boudreau listed the current
data sheet URL (thanks, John). I got it and found it does not match the
data sheet I had for Provia 400F (RHP) that I downloaded on May 31,
2002. The data sheets do not have a date on them that I can find.
The old data sheet is listed as AF3-799E for Provia400F (RHP). The new is
AF3-066E for Provia400F (RHPIII).
The new Provia 400F (RHPIII) data sheet is here:
http://www.fuji.fi/documents/13/provia_400f_AF3066E.pdf OK, what are the differences?
1. The RHPIII has a new peak in the blue range at
about 470 nm, but zero blue at 500 nm. The green layer has slightly
increased levels at 500 nm that probably compensate. Reds look essentially
identical.
2. RMS Granularity Value is now reduced to 13, from
15. This should be reduced grain.
3. Resolving Power is up with the new film.
At 1.6:1 contrast (low) it is now 55 lines/mm compared to 40. At
1000:1 contrast (high) it is now 135, up from 125 l/mm.
My film testing of Provia 400 was done in
mid June 2002, on what turns out to be the new RHPIII version. The
testing I did on both 35mm and 120 roll were all RHPIII. Since I never had
any of the old film, I have no test comparison.
At least Fuji marked their film properly, following
the marking they specify in their data sheet. ... Something Kodak should learn
to do.
I like Provia 400F (RHPIII) and use it for some of
my astrophotos, along with my supply of old Supra 400.
Don
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