Re: [SPAM] Re: Troubleshooting cyanotypes

From: stwang_at_CLEMSON.EDU
Date: Mon, 17 Jul 2006 17:17:01 -0400 (EDT)
Message-id: <1444.24.118.110.209.1153171021.squirrel@wm.clemson.edu>

Jordan,

With photograms, light doesn't have to go through Pictorico transparency
materials, which blocks over 1 stop of exposure I believe. Do a test to
determine, and try to stay with the same light source.

Sam

>
> Thanks everyone for your advice. I guess I am underexposing. The funny
> thing is that I was getting good results after about 5 mins exposure
> in bright sun. I went up to about 10-15 minutes in indirect sun and 30
> min under my compact blacklight (which gives good VDBs in about 10
> minutes) but obviously it's not enough.
>
> I'll try again with much longer exposures and see how that goes.
>
> I posted the successful photogram on my photoblog at
> http://www.photosensitive.ca/index.php/image/sun-print/ for anyone who
> wants to have a look.
>
> Jordan
>
Received on 07/17/06-03:17:12 PM Z

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