U of S | Mailing List Archive | alt-photo-process-l | Re: Paper negatives

Re: Paper negatives

  • To: alt-photo-process-l@usask.ca
  • Subject: Re: Paper negatives
  • From: Guido Ceuppens <altguido@gmail.com>
  • Date: Sun, 12 Oct 2008 12:12:23 +0200
  • Comments: "alt-photo-process mailing list"
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I like the image but I think the second one (un-oiled paper) needed
far more exposure.
I tried a quick exposure comparison between oiled and un-oiled Epson
PQP, using a 31 step tablet and cyanotype. For my setup I found a
difference of 2.5 stops:
oiled PQP : exposure 8 mins,
un-oiled PQP : exposure time 48 mins
I did not make a complete image as I cannot see any advantage in using
un-oiled paper, the extra (not too messy) step does not, FOR ME,
warrant the extra exposure time needed for each negative, especially
in multy-layer gum.

2008/10/12 Laura Valentino <laura@this.is>:
> I never got a clear answer about whether it is possible to use the Epson
> photo quality inkjet paper as a negative un-oiled, so I did a little test :)