Re: [APML] Fuji Provia 400 F Push Processing

["Jim Janusz" <jjanusz@dc.rr.com>]

Thanks everyone.  Based on some samples Stephen sent me I think this film
should push fairly well so I intend to try it on my next outing.

I think I'll desiccate it in a vacuum too.

Jim
----- Original Message -----
From: "stephen pitt" <lthuedk@pe.net>
To: <astro-photo@seds.org>
Sent: Wednesday, May 01, 2002 10:55 AM
Subject: Re: [APML] Fuji Provia 400 F Push Processing


> Hi: I hesitate going whole hog on pushing 3-stops anymore.  With push-3,
> it turned towards red on an hour-long exposure (way too long?).
>
> But the Provia seems to be able to take pushing 2 stops without
> problem.  With all the factors-including moisture, sky glo, and exposure
> time to induce possible variation, I hesitate to make blanket
> statements.  Fuji claims it can take push 3 without noticeable
> effect-but isn't that for day creatures?
>
> Now, I'm wondering about testing some after dehydration, ala
> Elitechrome. Up to now, I haven't introduced N2 to the mix during
> exposure either.
>
> So far, I have found little risk with pushing 2 stops.  I'd be glad to
> send a member with a site some images for evaluation.
>
> Stephen
>
>
>
> John Boudreau wrote:
> >
> > > > > Has anyone tested the Provia with a 1 or 2 stop push?  I scanned
some
> > > > > negatives that were 60 minutes at f7 and they were pretty dense.
> > Seems
> > > >like
> > > > > a 2 stop push may have helped.  I don't remember anyone on the
list
> > > > > discussing pushing this film.
> > >
> > >
> > > It's been discussed.  John Boudreau has done a lot of work with this
film,
> > > among others.
> > >
> > > Pushing will help with the scan.
> >
> > Actually, I haven't pushed this film yet. Most of the time I've used it
has
> > been under less than ideal skies, with some light pollution. So my
resulting
> > slides weren't really dense.
> >
> > I've seen some pushed 400F results from Stephen Pitt, and they looked
pretty
> > good. I believe he had been shooting at a good dark sky site. I fact
these
> > results *may* have helped the red response of this film. That's been
> > something I've wanted to check out, if I can get to a dark site (with
clear
> > skies<g>) this Spring/Summer. I have been planning on a +1 push next
time I
> > shoot it from a dark site.
> >
> > Perhaps Stephen will chime in here and give us his opinions on pushing
this
> > film.
> >
> > I did give a short hyper to a roll last Summer, 1hr @ 50C with a hand
pump
> > setup. Unfortunately haze and fog came in during the test exposures.
I've
> > had an unbelievable streak of bad luck with weather conditions since
about
> > April of last year ;o(
> >
> > I think it may need repeating that those who are used to E200's
incredible
> > red response are probably going to be disappointed with 400F on the
fainter
> > emission nebula. With it's strong blue response, I originally was
touting
> > this as a great film for galaxies. Time has shown that it gives fine
results
> > on the brighter emission nebula also, but E200 remains a top choice for
many
> > faint objects. Jon Kolb has some nice results where he used E200 for the
red
> > channel; and 400F for the green and blue.
> >
> > John Boudreau
> > jeboud@attbi.com
> > http://home.attbi.com/~jeboud/astro.htm
> >
> > ----- Original Message -----
> > From: "Jerry Lodriguss" <jml@astropix.com>
> > To: <astro-photo@seds.org>
> > Sent: Wednesday, May 01, 2002 3:29 AM
> > Subject: Re: [APML] Fuji Provia 400 F Push Processing
> >
> > >
> > > > > Has anyone tested the Provia with a 1 or 2 stop push?  I scanned
some
> > > > > negatives that were 60 minutes at f7 and they were pretty dense.
> > Seems
> > > >like
> > > > > a 2 stop push may have helped.  I don't remember anyone on the
list
> > > > > discussing pushing this film.
> > >
> > >
> > > It's been discussed.  John Boudreau has done a lot of work with this
film,
> > > among others.
> > >
> > > Pushing will help with the scan.
> > >
> > > Check the archives.
> > >
> > > Jerry
> > >
> > > Astrophoto Web Site: http://www.astropix.com
> > >
> > > Photoshop for Astrophotographers Book:
> > > http://www.astropix.com/APBOOK/0_PROMO/PROMO.HTM
> > >
> > > --  APML Archives at <http://astro.umsystem.edu/apml/>  ---
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> > >
> >
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