Hello:
There's a term for making things more complicated than they are, and I don't
remember what it is, so I'll get to the point (irony?).
exposure time multiplier = [(higher f-stop number)/(lower f-stop number)]^2
Don't need the logarithmic factors - I think I had them on both sides of my
equa
eric nelson has done some serious work modifying SX-70's maybe he can make a
recommendation or 2...
good luck
andy
-Original Message-
From: pinhole-discussion-admin@p at ???
[mailto:pinhole-discussion-admin@p at ???]On Behalf Of Guillermo
Sent: Tuesday, August 07, 2001 9:12 PM
To:
- Original Message -
From: "Joao Ribeiro"
> My SX 70 just broke, the film is not coming out.
> I know there are people here that use SX 70 for pinholes, so maybe some
> one knows how to fix it. I don't have anyone here in Brazil that is able
> to do that, so I'll have to manage to do it
Hi folks,
My SX 70 just broke, the film is not coming out.
I know there are people here that use SX 70 for pinholes, so maybe some
one knows how to fix it. I don't have anyone here in Brazil that is able
to do that, so I'll have to manage to do it myself.
Thanks in advance for any clues,
Joao
Hi Murray,
Someone posted a while back in alt-photo-list some instructions for developing
chromes in BW developers.
I gave it a try and it really works, I didn't like the results for ZP, but they
work grat for lens photo and PH.
Here is what I'm doing:
Film Provia
Rated iso: 1250 (if you want bett
The best developer, designed for push processing beyond 2 stops is the
Windich formulas or Pyrocetchen formulas found in Stephen G. Anchell's book,
"The Darkroom Cookbook," or the Anchel, Troop book, "The Film Developing
Cookbook;" either or both can be hand via your library by interlibrary loan
if
I've played with this some but have never been satisfied with the shadow
detail in the pushed negs, especially if pushed fairly far.
- Original Message -
From: Murray
To:
Sent: Tuesday, August 07, 2001 11:13 AM
Subject: [pinhole-discussion] push processing b/w film
> Anyone experimented
Ilford Delta 3200 ASA (ISO) which I frequently use for pinhole and zone
plate can be pushed several stops past its rated 3200 and is a great film!
Tina Martin
It's About Light!
www.tinamartin.com
_
Get your FREE download of MSN Ex
In case anyone is interested, I have just written a complaint to
supp...@legacywc.com and ka...@legacywc.com regarding their commercial posting
to the list. I have also added @legacywc.com to a list of addresses which are
not allowed to post to the list. I've never done this before, so I don't
ow crap...someone's found us
andy
-Original Message-
From: pinhole-discussion-admin@p at ???
[mailto:pinhole-discussion-admin@p at ???]On Behalf Of
supp...@legacywc.com
Sent: Tuesday, August 07, 2001 11:21 AM
To: pinhole-discussion@p at ???
Subject: [pinhole-discussion] Hav
the stuff is $100/box for the 8x10x100 sheet pearl surface.but it is
really nice stuff
-Original Message-
From: pinhole-discussion-admin@p at ???
[mailto:pinhole-discussion-admin@p at ???]On Behalf Of Guillermo
Sent: Monday, August 06, 2001 10:13 PM
To: pinhole-discussion@p at
Hi:
This what I think may be happening.
As film is developed the developer looses its activity. A film must be
developed in a volume of developer with enough capacity to fully develop
the film.
As the film is developed the developer in immediate contact with the film
looses its activity. This l
Dear pinhole-discussion@p at ???,
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every
combination of user inputs, errors and external variables.
Introducing Legacy World Class Software Testing (http://www.legacyWC.com).
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--- Murray wrote:
> Anyone experimented with push-processing b/w film to higher ISO speeds, for
> faster shutter speeds? This may be uninportant for users of big box cameras,
> because they're not very mobile, but for the handheld pinhole camera this
> might open up a wider range of photo subjects
I routinely push HP5 400 asa to 3200 asa. Get good results.
Anyone experimented with push-processing b/w film to higher ISO speeds, for
faster shutter speeds? This may be uninportant for users of big box cameras,
because they're not very mobile, but for the handheld pinhole camera this
might
Anyone experimented with push-processing b/w film to higher ISO speeds, for
faster shutter speeds? This may be uninportant for users of big box cameras,
because they're not very mobile, but for the handheld pinhole camera this
might open up a wider range of photo subjects that don't have to be
stat
Actually Cibachrome did make a transparency film so that you could make enlarged
display transparencies from your small format films. The photographer for the
aquarium here in Baltimore used to use it for making his displays.
Mike Vande Bunt wrote:
> Ilfochrome is a direct positive paper used to
> Ilfochrome is a direct positive paper used to
> make prints from slides. A transparency
> version of Ilfochrome would be redundant.
> Just use transparency film if you want a
> transparency.
>
> Mike Vande Bunt
Ilfochrome does have a transparency material.
http://www.ilford.com/html/
I've more or less standardised on Pyro PMK as a negative developer with HP5
and FP4. It produces negatives that are perfect for making ordinary silver
prints, but the proportional yellowish stain acts as added density which is
most effective at the blue and UV end of the spectrum. This makes the
ne
Ilfochrome is a direct positive paper used to
make prints from slides. A transparency
version of Ilfochrome would be redundant.
Just use transparency film if you want a
transparency.
Mike Vande Bunt
"Gordon J. Holtslander" wrote:
> Hi:
>
> Does anyone know if ilfochrome is available as a trans
Hello:
A number of the professional film data sheets Fujifilm sent me said no
reciprocity correction needed up to 120 seconds...I was as surprised by
that as I was by the steep exponential curve once you hit the
reciprocity failure region...the multipliers were so high it seems
things would be ver
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