RE: [APML] Centuria 400 - Photographic Results II

["Chris Schur" <cschur@therim.com>]

Philip, complicating the matter, is the Japanese version of the film,
"Centuria 400" without the word Super.  OPT sent me some rolls of this for
testing, which I will try to get to tonight.  I suspect its the same film,
but only one way to be sure...

Chris

-----Original Message-----
From: astro-photo-bounces@seds.org
[mailto:astro-photo-bounces@seds.org]On Behalf Of Philip Perkins
Sent: Sunday, June 20, 2004 4:21 PM
To: Discussion of Film Astrophotography
Subject: Re: [APML] Centuria 400 - Photographic Results II


Chris,

Very interesting and useful work.  Some of those results may be better than
they appear at first.  I tested this film sometime around 1998 and thought
the results showed some promise.  Of course the film may have changed since
then.  At the time I thought the reds had a somewhat "muddy-brown" colour,
but otherwise the Ha response was pretty decent.  One thing that is very
good with this film is the OIII crossover - currently this may be one of
the few colour neg films around that tries to record the visible spectrum
accurately.  I think this film has potential and is worth testing further -
the only reason I didn't pursue it back in 1998 was that PJM-2 and PPF were
available at the time.  It's hard to understand why the quality problems
exist - the rolls I tested all seemed to be fine.  Another thing worth
mentioning is that there used to be a 120 format version of this film - not
sure if that's still the case.

--Philip


At 10:33 20/06/2004 -0700, you wrote:
>Hi all,
>
>I cant believe the number of hours Ive spent on testing this film, I hope
>its appreciated!  Anyway, here is the tracked telephoto tests from dark sky
>sites for your evaluation.  At this point, I am not impressed with the film
>for wide angle, and its green response tends to dilute the red sensitivity.
>There are major quality issues with this film as you will see, each roll
>varied alot, and the color balance changed from roll to roll.  Here are the
>results of many hours of work:
>
>http://www.psiaz.com/schur/astro/filmimagepages/kontests2.html
>
>
>Comments Appreciated!
>
>
>Clear Skies,
>
>Chris Schur
>Astro: http://www.PSIAZ.com/Schur/astro
>Robotics: http://www.psiaz.com/schur/astro/roboticsmain.html


Philip Perkins
<pgp@astrocruise.com>
Wiltshire UK & Luberon France

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