Claire Senft said:Bob one technique that I have used to increase film speed that does not increase contrast is to prebathe the film prior to development in a solution of 1% sodium perborate.
This should give a doubling of speed with any black&white film with the contrast and grain size staying the same.
Claire Senft said:Try a shadow based exposure and try again with two 1dentical placements on Zone 2 or three and see if it helps. All of the articles appeared in the finest..my opinion..photography magazine extant. Photo Techniques. What else would one call a photo magazine that publishes those neat articles by Patrick Gainer? I should have been a bit more moderate in my statement and have said that it can add up to 1 stop of film speed.
Claire Senft said:I should keep my opinion to myself...I know you did not ask me but I feel so strongly that you are so much more to be likened to a Lotus than to say a Mack, SAAB or Peterbilt Nicole. Just passing remark in the righthand lane.
jdef said:Should I be worried that a pinhole might not provide even enough light over the surface of the film? Perhaps a group of pinholes?
jdef said:Thanks, Donald.
I thought of the diffuser too, but I was most curious about the evenness of illumination from a single pinhole.
Helen B said:A colleague and I did a modest search of available information on perborate latensification then mulled it over for a while. Here is our lazy, hurried plagiarism of other peoples hard work, with a few insignificant additions, fantasies and elaborations of mine:
Best,
Helen
Helen B said:A colleague and I did a modest search of available information on perborate latensification then mulled it over for a while. Here is our lazy, hurried plagiarism of other peoples hard work, with a few insignificant additions, fantasies and elaborations of mine:
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