Divided Developers

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Alan Smithee - 31 Mar 2005 03:56 GMT

Can someone publish or point me in a direction to find divided developers
for B&W and C-41 films (and sure why not E-6 while we're on the subject).
Thx.

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sreenath - 31 Mar 2005 10:56 GMT

An old issue of "creative photographic darkroom techniques" has an
article by Patrick Dignan about divided (two bath) C-41 developer. It
gives the formula and processing techniques as well.

-Sreenath

> Can someone publish or point me in a direction to find divided developers
> for B&W and C-41 films (and sure why not E-6 while we're on the subject).
> Thx.

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rme615f - 31 Mar 2005 13:56 GMT

Nice article on Divided D23, here:

http://unblinkingeye.com/Articles/DD-23/dd-23.html

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John - 04 Apr 2005 05:22 GMT

>Nice article on Divided D23, here:
>
>http://unblinkingeye.com/Articles/DD-23/dd-23.html

There is no such developer as Divided D23. How can you divide a formula that has
only two components ?

John - http://www.puresilver.org

"Are you planning on accepting the new definition of photography?" - Frank
"Just as soon as humanity accepts a new definition of the term humanity." - John

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Robert Vervoordt - 05 Apr 2005 00:32 GMT

>>Nice article on Divided D23, here:
>>
[quoted text clipped - 4 lines]
>
>John - http://www.puresilver.org

By adding to the formulation. Pull out a lot of the Sulfite and add
Bisulfite to the A bath so that it doesn't develop, them make an
Alkaline B bath with enough Sulfite to preserve and provide so;vent
action.

Using the original formula as the A bath has its known problems, as
development takes place, leading to control problems, sometimes.

Robert Vervoordt, MFA

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John - 05 Apr 2005 11:23 GMT

>> There is no such developer as Divided D23. How can you divide a formula that has
>>only two components ?
>
>By adding to the formulation.

And then it is not D-23. It's kinda like that digital imaging v. photography
thing. If you change the formula and it's no longer what was originally identified with
the name.

John - http://www.puresilver.org

"Are you planning on accepting the new definition of photography?" - Frank
"Just as soon as humanity accepts a new definition of the term humanity." - John

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Robert Vervoordt - 06 Apr 2005 04:04 GMT

>>> There is no such developer as Divided D23. How can you divide a formula that has
>>>only two components ?
[quoted text clipped - 4 lines]
>thing. If you change the formula and it's no longer what was originally identified with
>the name.

You got the point. Basically, anything that permits development to
occur in the A bath is not truly a divided developer. At best it
permits split development.

>John - http://www.puresilver.org
>
>"Are you planning on accepting the new definition of photography?" - Frank
>"Just as soon as humanity accepts a new definition of the term humanity." - John

Robert Vervoordt, MFA

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dan.c.quinn@att.net - 01 Apr 2005 10:44 GMT

> Can someone publish or point me in a direction to
> find divided developers ...

At www.barrythornton.com you'll find some info. Dan

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Robert Vervoordt - 01 Apr 2005 10:59 GMT

>> Can someone publish or point me in a direction to
>> find divided developers ...
>
> At www.barrythornton.com you'll find some info. Dan

Dead link. Are there any others?

Robert Vervoordt, MFA

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Alan Smithee - 01 Apr 2005 16:06 GMT

>>> Can someone publish or point me in a direction to
>>> find divided developers ...
[quoted text clipped - 4 lines]
>
> Robert Vervoordt, MFA

if you go to www.archive.org you can punch in barry site and the old pages
still come up.

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Robert Vervoordt - 02 Apr 2005 01:07 GMT

>>>> Can someone publish or point me in a direction to
>>>> find divided developers ...
[quoted text clipped - 7 lines]
>if you go to www.archive.org you can punch in barry site and the old pages
>still come up.

Done and thanks.

Robert Vervoordt, MFA

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Alan Smithee - 01 Apr 2005 16:10 GMT

>> Can someone publish or point me in a direction to
>> find divided developers ...
>
> At www.barrythornton.com you'll find some info. Dan

He passed away in 2003.

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