Re: [APML] Provia concensus roundup

["westergren" <westergren@netzero.net>]

Herm,
 I have film test data that compares E200 and Provia400 at standard and
push+2 processing.  That comparison is at
http://home.nethere.net/mpd/FilmTestData/FilmTestData.htm

I have shot several rolls of Provia400, push+2 now, and find that it must be
exposed correctly, not over exposed.  I shoot at both f5 and f9.  In fairly
dark skies (Mt Laguna CA) the Provia works well at 45 minutes at f5, but at
1 hour starts to show sky fog.  Anything longer is hard to work with.  In
comparison with the best color negative films, the Provia seems a bit more
sensitive to both blue and red nebula.  I have never run into sky fog with
color negative films, even at f5 for 2 hour shots.  The slide films are
noted for more contrast and less latitude than negative films.  That's
apparently what causes the sky fog sensitivity of the slide film.

Don



> There are many of you experimenting with Provia film.. a quick reply with
> your opinions would be appreciated. I'm looking for a fine grain film with
> decent performance in the blue (good for galaxies) and decent red
response.
> Please state the speed of your system and general exposure times for the
> Provia family of films.
>
> No film will ever match E200 for red sensitivity but it does suffer in the
> faint blue stuff (galaxies).. strangely enough I have found E200 to have
> good response to bright blue sources such as the Running Man and Trifid
> nebulas.. but it really does not do a good job on galaxies like hypered
> print film.
>
>
> Herm




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