eric, you can remove the silver from used fixer with
copper... some folks use sheets of it
the silver copper happily trade places, it's not really an
attack...
don't know about the other process you have in mind, though
jim
Many thanks,
Jim Kosinski
Starlight Cameras
PO Box 540
Cherry
there are always a few silver atoms in a used developer
solution but nowhere near the amount you would find in used
fixer
copper is, in fact, used as a test for silver content after
silver recovery to make sure the silver level is low enough
for disposal
Many thanks,
Jim Kosinski
Starlight
It was held up because I was on a different ISP it wasn't registered with
the newsgroup...sorry. If I see any more I'll be sure to post it from the
proper ISP. Did you request a sample?
andy
-Original Message-
From: pinhole-discussion-admin@p at ???
[mailto:pinhole-discussion-admin@p
- Original Message -
From: ISHIKAWA Masaru mishik...@microhouse.co.jp
Celebrating Chinese New Year, a Year of Horse.
(Unfortunately Asian not always understand Chinese. )
Kung hei fat choi is virtually universal these days, no need to be Asian
Cantonese speaking person to know that's
You are a Year Man, jack.
- Masaru
I am one of the 60 variety this year - horse rocks!
jack
Did I inspire this thread?
Celebrating Chinese New Year, a Year of Horse.
(Unfortunately asian not always understand Chinese. )
I am a one of asian, actually a Japanese, on the list.
I am a Rabbit.
For those not familiar with Chinese calender: One of 12 animals -
mouse, cow, tiger, rabbit,
Don't feel bad, Chris.
I went to check the site just as I got Andy's email and the offer was
closed. Suspect that there may have been a deal outside and the seller
withdrew his offer. That happens quite often on eBay...
Cheers,
Guy
--
From: Chris Peregoy
Too bad this is already over.
Too bad this is already over. I had just been checking this produce out
and a similar one for inkjet printing. Here is a link to their web site.
http://www.horizonsisg.com/metalphoto/
It went for $21.50 which was probably a steal. I guess I need to check
my pinhole messages more often.
Bill Erickson writes:
Since you brought this up, there are two factors influencing the intensity
of light at the film plane, the distance from the pinhole and the angle off
axis. As you move off axis of a flat film plane, the distance from the
pinhole to the film grows, and the apparent
Since you brought this up, there are two factors influencing the intensity
of light at the film plane, the distance from the pinhole and the angle off
axis. As you move off axis of a flat film plane, the distance from the
pinhole to the film grows, and the apparent shape of the pinhole changes
Hi:
I read somewhere that copper used in one of the 3 common solutions in the
darkroom causes sulpherdioxide gas wich causes headaches, drowsyness, and
other side effecs. Why don't you e-mail Ilford's saftey people? They're
nice.
Dean
Hello all,
Is is possible to use copper scraps to plate out
Dear Joao
I'm no mathematician but I think you will find that the parts of the film
nearest the pinhole will receive a greater amount of light for a given area
than parts of the film further away
This is because of the inverse square law, which states simply that the
radiation falling on a
Hello all,
Is is possible to use copper scraps to plate out silver from spent fixer?
There seems to be a mild attack on the copper if it is placed into spent fixer.
I am almost tempted to try copper plate etching for intaglio printing plates
using the fixer as a mordent.
I am have held off due
Thanks Bill and Guillermo for your answers.
But ...
Geometrically/mathematically speaking, the angle changes when the
pinhole diameter changes, the change is so small tho, that in practice you
can dismiss it. Since you want to calculate the cone angle, otherwise
known as angle of view,
Thats what I figured but I don't have my chemistry books down herethough
it gives me a smashing idea for out jewelry people @ Peters Valley Craft
Education center
andy
-Original Message-
From: pinhole-discussion-admin@p at ???
[mailto:pinhole-discussion-admin@p at ???]On
No need to buy a camera or spend more than $15 (including a pinhole).
I recently bought a Brownie Flash six-20 camera from the 1940s for $5.
These are plentiful in junk shops and ebay. You can remove its lens with
a screwdriver and replace it with a pinhole (available from
pinhole
Kung hei fat choi !! to all our Asian friends in this list.
Guillermo
I'll join you on this, Guillermo. I wonder how many Horses we have on
this list? Please all the Horses raise their hand.
Guy
PS. I'm a Dog (faithful and always ready to help. Nice qualities that
usually gets me into
In a message dated 2/11/02 9:52:13 PM Central Standard Time,
heidtsa...@hotmail.com writes:
But I was thinking of getting one of those
ZeroImage cameras that will accept medium format film. Is it worth the
money?
Sarah, I have one of those Zero Image cameras, and I suspect many of us on
No need to buy a camera or spend more than $15 (including a pinhole).
I recently bought a Brownie Flash six-20 camera from the 1940s for $5.
These are plentiful in junk shops and ebay. You can remove its lens with
a screwdriver and replace it with a pinhole (available from
pinhole resources).
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