Push Fortepan 400?

Just had to push a roll of Fortepan 400, any recommendations on dev
and times for this without getting excessive grain, will use Rodinal
if I must but would prefer X-tol or D-76.

wrote:

Just had to push a roll of Fortepan 400, any recommendations on dev
and times for this without getting excessive grain, will use Rodinal
if I must but would prefer X-tol or D-76.

XTOL is reported to be one of the best developers available for
increasing film speed without excessive extra grain. The Massive Dev
Chart at www.digitaltruth.com recommends 12.5 minutes with XTOL 1:1 for
EI 400 (this is for 35 mm, but shouldn't vary much for 120, if you're
using that size). While they don't have a recommendation for higher EI,
in general you can push cubic grain films like Fortepan one stop by
increasing development time 40-50%; that would put you around 18 minutes
in 1:1, still at 68F with normal agitation.

Another fine option, if you can get it, would be to develop in Diafine;
that should support an EI of 640 to 800 without a great increase in
grain, and maintain approximately normal contrast (certainly no more
increase than would occur with a conventional push to 800). Diafine is
easy and quick to use -- three minutes in Bath A, with gentle agitation
every minute, and then (without stop or rinse) three minutes in Bath B
with minimal agitation (I've found 5 inversions after filling, and one
at each minute after that works very well), then water stop and fix
normally. As a bonus, the Diafine working solutions last approximately
forever -- because Bath A isn't alkaline, the developing agent isn't
prone to oxidation as it would be in single bath developers. Some users
replenish by replacing lost volume of the A bath with fresh solution,
while pouring off and replacing the same quantity of B bath; others just
use the same solution as long as it will cover the film, then discard
and replace both baths. Seems to work fine either way.

--
I may be a scwewy wabbit, but I'm not going to Alcatwaz!
-- E. J. Fudd, 1954

Donald Qualls, aka The Silent Observer
Lathe Building Pages http://silent1.home.netcom.com/HomebuiltLathe.htm
Speedway 7x12 Lathe Pages http://silent1.home.netcom.com/my7x12.htm

Opinions expressed are my own -- take them for what they're worth
and don't expect them to be perfect.

wrote in message . ..
Just had to push a roll of Fortepan 400, any recommendations on dev
and times for this without getting excessive grain, will use Rodinal
if I must but would prefer X-tol or D-76.

You cannot push any film. It doesn't work.

wrote in message . ..
Just had to push a roll of Fortepan 400, any recommendations on dev
and times for this without getting excessive grain, will use Rodinal
if I must but would prefer X-tol or D-76.

You cannot push any film. It doesn't work.

(Uranium Committee) wrote in message . com...
wrote in message . ..
Just had to push a roll of Fortepan 400, any recommendations on dev
and times for this without getting excessive grain, will use Rodinal
if I must but would prefer X-tol or D-76.

You cannot push any film. It doesn't work.

What do you think why about all manufacturers of black and white films
and chemicals give times for push-processing?

Not to forget the well adopted use of tailoring the CI of film to the
subject brightness range as done in the zone-system
(http://dizzy.library.arizona.edu/bra...de/zonesys.htm).

Maybe a conspiracy?

(Uranium Committee) wrote in message . com...
wrote in message . ..
Just had to push a roll of Fortepan 400, any recommendations on dev
and times for this without getting excessive grain, will use Rodinal
if I must but would prefer X-tol or D-76.

You cannot push any film. It doesn't work.

What do you think why about all manufacturers of black and white films
and chemicals give times for push-processing?

Not to forget the well adopted use of tailoring the CI of film to the
subject brightness range as done in the zone-system
(http://dizzy.library.arizona.edu/bra...de/zonesys.htm).

Maybe a conspiracy?

Stefan Kahlert wrote:
(Uranium Committee) wrote in message . com...

wrote in message . ..

Just had to push a roll of Fortepan 400, any recommendations on dev
and times for this without getting excessive grain, will use Rodinal
if I must but would prefer X-tol or D-76.

You cannot push any film. It doesn't work.


What do you think why about all manufacturers of black and white films
and chemicals give times for push-processing?

Not to forget the well adopted use of tailoring the CI of film to the
subject brightness range as done in the zone-system
(http://dizzy.library.arizona.edu/bra...de/zonesys.htm).

Maybe a conspiracy?

Stefan, just ignore Uranium Committee -- he rants on and on with the
same old "you can't" and "that's no good" messages, and all he's after
is attention. He's what the Usenet community calls a "troll".

--
The challenge to the photographer is to command the medium, to use
whatever current equipment and technology furthers his creative
objectives, without sacrificing the ability to make his own decisions.
-- Ansel Adams

Donald Qualls, aka The Silent Observer http://silent1.home.netcom.com

Opinions expressed are my own -- take them for what they're worth
and don't expect them to be perfect.

Stefan Kahlert wrote:
(Uranium Committee) wrote in message . com...

wrote in message . ..

Just had to push a roll of Fortepan 400, any recommendations on dev
and times for this without getting excessive grain, will use Rodinal
if I must but would prefer X-tol or D-76.

You cannot push any film. It doesn't work.


What do you think why about all manufacturers of black and white films
and chemicals give times for push-processing?

Not to forget the well adopted use of tailoring the CI of film to the
subject brightness range as done in the zone-system
(http://dizzy.library.arizona.edu/bra...de/zonesys.htm).

Maybe a conspiracy?

Stefan, just ignore Uranium Committee -- he rants on and on with the
same old "you can't" and "that's no good" messages, and all he's after
is attention. He's what the Usenet community calls a "troll".

--
The challenge to the photographer is to command the medium, to use
whatever current equipment and technology furthers his creative
objectives, without sacrificing the ability to make his own decisions.
-- Ansel Adams

Donald Qualls, aka The Silent Observer http://silent1.home.netcom.com

Opinions expressed are my own -- take them for what they're worth
and don't expect them to be perfect.

On Thu, 04 Nov 2004 18:43:19 GMT, Donald Qualls
wrote:

Stefan, just ignore Uranium Committee -- he rants on and on with the
same old "you can't" and "that's no good" messages, and all he's after
is attention. He's what the Usenet community calls a "troll".

I haven't followed the group for several months - is he by any chance
the troll formerly known as Michael Scarpitti?

On Thu, 04 Nov 2004 18:43:19 GMT, Donald Qualls
wrote:

Stefan, just ignore Uranium Committee -- he rants on and on with the
same old "you can't" and "that's no good" messages, and all he's after
is attention. He's what the Usenet community calls a "troll".

I haven't followed the group for several months - is he by any chance
the troll formerly known as Michael Scarpitti?