From: Belén Martíne (belenmartinez@arnet.com.ar)
Date: 11/16/00-10:02:35 PM Z
Thank you very much, Tadeus!
I don't seek realistic colors, I just want an image!
Can you explain to me what is "Thiourea"? I' ve seek in my dictionary, and
it not appear...
Thanks again
Belén
----- Original Message -----
From: Tadeuz Jalocha <tjalocha@netexpress.cl>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Friday, November 17, 2000 12:57 AM
Subject: Re: Developing color film in b&w chemicals
Hi,
If you want more or less realistic colors try working solution RA-4 with
+/- 1.5gr Sodium SULFITE per liter. Develop like C-41 i.e 4 1/2
minutes@35°Celsius. This solution has a really LOW capacity. It develops
2 4x5" negs in 300 ml (jobo processor) perfectly. But 4 developed the
same way become way underdeveloped.
But i suppose, that you dont seek realistic colors so...
Developing in B/W chemistry gives you 2 possibilities:
1.- Complete process (develop, stop, fix ) with B/W chemistry.
You get a VERY dense negative almost not printable.
-Now you Bleach in a rehalogenating bleach:
For ex. (typical c-41 bleach)
Water 750ml
Potassium ferricyanide 95gr.
potassium bromide 21gr.
water up to 1000ml
( you may use a common toning bleach like the one used for thioura-sepia
toning)
-Then you reexpose to light. You will need plenty of light.
-Dry and take to your local developing shop and develop as C-41.
depending on your first developer and development time, you may get a
gain of speed, huge grain, heavily saturated colors, and most important,
a complete control over contrast.
Printing these negatives will be very difficult, i had negatives that
resulted with a green mask rather than the typical orange one.
This process is sometimes referred as "enhancing"
2.-You obtain a diapositive with some colored mask if you develop in B/W
developer, wash and redevelop in RA-4 developer after reexposing to
plenty of light. After that you will need a bleach like above, and a
common fix to complete the process.
This process is interesting with the "Poor people's Ilfochrome" -
process. Just reverse the paper like you did with the film.
And if you get tired of always reexposing to light, you can try a
chemical fog:
Brutal fogger (i take NO responsabilites for this formula!):
Water 750 ml
Thiourea 5g
Sodium Carbonate 5g
Water up to 1000 ml
Add a few ml of this brew to your second developer and discard after
use. The developer does not keep after the addition of Thiourea. So you
have to add it to your developer inmediately before you develop.
This is in fact a Sepia-odourless redeveloper, so you may experiment
with toners of this type.
Saludos,
Tadeuz
Belén Martínez wrote:
>
> Hi Stefan,
>
> I was thinking about the silver salts for developing
> and I forgot the color layers; are there so difficult to remove, right?
> For RA4 developing, you know any kit to do it?
> Thanks
> Belén
>
> ----- Original Message -----
> From: 1232-553-1 <1232-553@onlinehome.de>
> To: <alt-photo-process-l@sask.usask.ca>
> Sent: Wednesday, November 08, 2000 2:36 AM
> Subject: Re: Developing color film in b&w chemicals
>
> Forget about this idea.
>
> You will get a very thin silver image, but nearly totally
> blocked by layers (don't know the english words) which
> normaly will be erased by the color chemistry.
>
> More interesting is cross processing:
> High sensity neg film developed extremly long in overworked RA4,
> transparencys developed in RA4 ...
>
> Regards
> Stefan
> ----- Original Message -----
> From: Belén Martínez <belenmartinez@arnet.com.ar>
> To: <alt-photo-process-l@sask.usask.ca>
> Sent: Thursday, November 16, 2000 2:53 AM
> Subject: Developing color film in b&w chemicals
>
> Hello list,
>
> Somebody have to do that?
> How about the results?
> Are there interesting?
> Thanks
> Belén
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