From: Carl Weese (cweese@earthlink.net)
Date: 08/23/02-01:24:12 PM Z
Victor,
Thanks. I'm glad to see a confirmation of the Gainer method from PT. I'd
assumed he was correct but it's always nice to see a procedure confirmed by
another worker.---Carl
--
web site with picture galleries
and workshop information at:
http://home.earthlink.net/~cweese/
----------
>From: Victor Loverro <victor.loverro@verizon.net>
>To: alt-photo-process-l@sask.usask.ca
>Subject: Re: negative intensification
>Date: Fri, Aug 23, 2002, 11:22 AM
>
> The method I have been using is the one described by Patrick Gainer in an
> excellent article in the Mar/April 2000 Photo Techniques titled "More
> Pyrotechnics." It is a bleach and redevelopment in PMK process. I have
> used it on negatives that were initially developed in non-pyro developers
> that were almost too thin for silver printing. I have not done alt-process
> printing, but I use the negatives for POP printing on the Centennial paper
> which requires a fairly contrasty negative. The negatives also print much
> better on regular silver paper.
> For the bleach:
> 2 tsp. potassium ferricyanide
> 1 tsp. potassium bromide
> add to 1 pint of water.
> Bleach the negative until there is no more black silver image. This may
> be done in normal room light. Wash thoroughly before redevelopment. It is
> important to expose the negative to bright light after bleaching and before
> redevelopment. Then develop in PMK. I use the normal times recommended for
> whatever film I am using. There is no need to fix after and no need to
> return to developer. If more contrast/density is needed, the process can be
> repeated. One caution: make sure the negative you use is thoroughly fixed
> and thouroghly cleared of any fixer. Any residual fixer may cause streaking
> in the redeveloped negative.
>
>
> ----- Original Message -----
> From: "Carl Weese" <cweese@earthlink.net>
> To: "altphotolist" <alt-photo-process-l@sask.usask.ca>
> Sent: Friday, August 23, 2002 9:09 AM
> Subject: negative intensification
>
>
>> Many alternate processes require negatives with more contrast than
> "normal".
>> Some films can easily reach the needed level of contrast simply by
> extending
>> development, others do not respond as well. Intensification to increase
>> contrast is another way to get long scale negatives. I'm interested to
> know
>> if anyone on the list uses this approach routinely, or as a normal
>> corrective procedure. If so, what methods have proved most useful?
> Selenium
>> looks like the simplest procedure, but there are others and I'm curious
>> about results.---Carl
>> --
>> web site with picture galleries
>> and workshop information at:
>>
>> http://home.earthlink.net/~cweese/
>>
>
>
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