[alt-photo] Re: Is this mailing list still active?
keith.gerling at gmail.com
Sat Mar 26 13:40:52 GMT 2011
Taking advantage of the long-ish exposures from pinholes, the easiest way to
make tr-colors while staying "traditional" is to make three filtered
exposures on black and white film.
Not speaking for Kurt, but that is how i intend to do it.
On Fri, Mar 25, 2011 at 11:39 PM, Gordon J. Holtslander <gjh at shaw.ca> wrote:
> Hi Kurt:
> Just reading over your message again. Do you want to do tri-color gum from
> a pinhole negative? If so I'm curious about the film you will use.
> The bulk of my gum work was done from 8x10 black & white pinhole camera
> I've read that its possible to shoot color transparency film in a pinhole
> camera - filtration is necessary, but to do a tri-color one would have to
> make separation negatives or create digital negatives.
> On 3/24/2011 5:23 PM, Kurt Nagy wrote:
>> Hello, my name is Kurt Nagy
>> This post is just an introduction and to see if there are still people out
>> I'm a traditional (non digital) photograhy student at the University of
>> Central Oklahoma that stumbled across this mailing list while researching
>> Gum Bichromate. I've read through a majority of the archives at
>> http://www.usask.ca/lists/alt-photo-process/ and learned quite a bit, so
>> thank you in advance.
>> The last active posts I can find were in 2009 where I assume it moved to
>> the current format but I'm not quite sure if this list is still active, so
>> maybe this message will go no where but I hope not.
>> I've only made a few test gums and its definitely a lot of trial and
>> error. My current coating process is
>> Bostick& Sullivan Bergger paper sized w/ gesso and 3.5% geletin
>> A stock solution of gum/pigment mixed 3 to 1 ratio
>> 1 part stock, 1 part gum, 1 part potassium dichromate (13% sat.)
>> Using Winsor& Newton watercolors, lamp black and winsor blue/red/yellow
>> Test exposures with my film negative is about 25 min under my UV lamps
>> which seems a bit long from the other posts I've read but my negative is
>> quite dense although it does print fine on normal grade Ilford paper.
>> My end goal is to produce tri-color gum using traditional negatives and
>> pinhole, I love the workmanship that goes into traditional and alternative
>> Alt-photo-process-list | http://altphotolist.org/listinfo
> Gordon J. Holtslander
> gjh at shaw.ca
> Alt-photo-process-list | http://altphotolist.org/listinfo
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