I shot a lot of Tech Pan when I was working for Sprint Systems of Photography. If I recall correctly, my experiments with that film were co-incident with Sprint's desire to have a footprint within the spectrum of digital photography that was a so new (at that time) and seemed to be coming on so strongly. I think I was working on what we thought would be a "product" that might be called..."Scan-Tastic". The idea, as most may be able to suss out, was to have a product that bridged chemical/digital workflows and would give Sprint a footprint in the "Digital Darkroom" that seemed to be coming sooner than management had realized. "Scan Tastic" was to be the developer of choice, with Tech Pan, to provide the best scannable negative to scan in order to obtain a file to print out an acceptable digital print. Sprint sent me up to Jon Cone in Topsham, Vermont to see what might be done along these lines.
I never did evaluate that film for spectral sensitivity. I came up against reciprocity effects when using apertures that were intended to increase depth of field.
I also found regular developers produced higher contrasts than were desired. I strived for Phenidone rich, lower Ph, developers that were to mimic "Technidol". I had the ear of a friend, at that time, and he told me that the digital capture devices (that were available at that time) were so infinitely superior to the sensitivity that one could achieve with film/chemistry that I was, essentially, pissing up a rope.
It was still fun work and I enjoyed the experiments.
