U of S | Mailing List Archive | alt-photo-process-l | Re: Dark reaction

Re: Dark reaction


  • To: alt-photo-process-l@usask.ca
  • Subject: Re: Dark reaction
  • From: etienne garbaux <photographeur@nerdshack.com>
  • Date: Mon, 02 Nov 2009 19:39:36 -0500
  • Comments: alt-photo-process mailing list
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Judy wrote:

I have however come across warnings against fluorescents in "the literature," but wonder if the warners ever tried it. As I've probably mentioned, when I was teaching "non-silver," the classroom (a repurposed chem lab) was lit by several banks of fluorescent lights set in a fairly low ceiling.

But I gather that some folks really do coat by safelight -- and, if memory serves, some how-to sources advise that. (Is that possible? YIKES!)
I coat and/or sensitize gelatin-based dichromated processes by red (lithographic) safelight, after proving to my satisfaction that the gelatin-dichromate processes can easily be degraded by fogging even under bug lights or low-wattage incandescents -- but, as I've said before, I don't use gum, and what is necessary for dichromated gelatin is not necessarily required for dichromated gum.

Best regards,

etienne