Thanks Andrew.
Have used selenium with Ortho Litho film in the past. It did work, adding density to the highlights in the negative. It resulted in an increase of contrast of about one paper grade in the print. Didn't do an extensive testing though, so it might be possible to push it even further.
Also, if the above is combined with selenium toning the print (adding density to the shadows) it could lead to a total increase of about two paper grades, give or take.
I was thinking of trying negative intensification when printing from some old x-ray negatives a couple weeks ago. They were a bit thin, requiring grade 5 to produce usable prints.
So, if anyone has any experience with it, I too would be very interested in your findings.
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