A further note for photographic nuts, nerds and pixel-peepers, about the 35mm film used in my photos from the 1981 poetry launch party in Newtown, Sydney:
This description comes from Kodak publication No. P-255, copyright 1985:
“KODAK Technical Pan Film is a black-and-white panchromatic negative film with extended red sensitivity. The 2415 Film is available in both 35 mm and 4 x 5-inch sizes; it has a dimensionally stable 4-mil (100 µm) ESTHAR-AH Base with a built-in 0.1-density dye that suppresses light piping. The 6415 Film is available in 120 size with a 3.6-mil acetate base. Both 2415 and 6415 Films have good latent-image keeping and a dyed-gel backing to suppress halation and curl.”
With grain fine enough to slice an over-ripe tomato. Sadly, Kodak stopped making it in the mid-1980s. The “extended red sensitivity” gives dark skies and very pale lips and noses and tomatoes.
Wikipedia is worth consulting, as usual: http://en.wikipedia.org/wiki/Technical_Pan
Correction: the date was probably Saturday 12 March, 1983.