At 13:34 3/10/02, I wrote:
At 05:54 3/10/02, Bernd Moeller wrote:
So the question is: Which film renders both the crystal blue colours of
icebergs, the deep colours of the sparse greenlandic vegetation, the
black rocks and the immense amount of sky, and can cope with the high
contrasts?
High contrast is a tall order for chromes. Have you tried Fuji Astia or
considered it?
I compared the characteristic curves between it and Provia 100F. Astia
looks a little longer in the toe of the curve (i.e. should have greater
latitude). It's more restrained in saturation, but accurate in
color. diffuse rms granularity of 10, about par for the E-6's in this speed.
Just compared it to Kodak's Ektachromes: EPN, EPP, E200, E100S and E100VS
(E200 = pro version of Elitechrome 200, E100S = pro version of Elitechrome
100, and E100VS = pro version of Elitechrome Extra Color).
I would have expected EPN (also a restrained saturation film) to be a bit
longer in the toe/shoulder but it doesn't appear so. I've used it and IMHO
it is accurate color, but "flat" compared to Astia. Maybe more suitable
for catalog work when control of product "reflectance" and its effect on
color accuracy is of concern.
They're all about the same as Provia 100F in about the same delta of Log
Exposure spanning film Density (shift the curves for ISO 200 films to
account for half the exposure required). Exceptions were E100VS which
appears to be narrower in latitude at the toe (not too surprising) and E200
which appears to be a little wider, but not as wide as Astia and Astia's
MTF looks slightly better for higher apparent image acutance (E200 doesn't
exceed 100 0n the lower lp/mm and falls off slightly steeper; Astia
exceeds 100 0n the lower lp/mm and its falls-off isn't as steep).
On the topic of acutance, Provia 100F looks better than Astia's, but not by
much (alas, Kodak doesn't provide these numbers, so it's pure
interpretation of the MTF curves):
1.6:1 1000:1
Astia 55 lp/mm 135 lp/mm
Provia 60 lp/mm 140 lp/mm
Just some technical data for consideration. I recommend shooting some
under high contrast situations to see if you like the visual results
*before* loading up on it for your trip.
-- John
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