[alt-photo] Re: Is this mailing list still active?
kakarott76 at hotmail.com
Sun Mar 27 23:38:20 GMT 2011
Sorry, didn't see this Gordon. Kinda hard to keep track of the responses when they come in quickly. Is there a way to
respond without keeping the original email and/or creating a new "thread"?
Yes, my ultimate goal for producing images will be tri-color seperations via pinhole using black and white negatives. I have good luck
with Ilford products and all my 4x5 images are shot using either Delta 100 or HP5 400.
I initally decided to do gum because when I shoot color film I can develop it at home but I don't know how to make a C-print. Wanting to stay away from printing my negatives digitally I found an article explaining how to make color images using black and white + photoshop, little bit more digging revealed the 19th century color photos by Sergei Mikhailovich Prokudin-Gorskii. He didn't actually make prints but projected them together to form color but it got me interested. I wanted to do dye transfer but that is
all but impossible to find info and materials on, so gum bichromate it is :)
I already have my set of Lee color seperation filters, according to their materials they have a filter factor of 1-1 1/2. I just haven't had a chance to run any tests.
Do you have any of your images posted online to see? I'd love to see your results
> Date: Fri, 25 Mar 2011 22:39:13 -0600
> From: gjh at shaw.ca
> To: alt-photo-process-list at lists.altphotolist.org
> Subject: [alt-photo] Re: Is this mailing list still active?
> 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 there.
> > 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 process,
> > Thanks
> > _______________________________________________
> > 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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