I wonder whether the image is the result of an early scanning process, perhaps a wirephoto? I don't think it could be the result of one of the late 19th. early 20th.century colour film processes, as the colour bands suggest some sort of mechanical scan, rather than the random arrangement of colour pigment carriers which most of those early processes used.
Quite intriguing anyway, as it's not exactly great art! John Coyle Brisbane, Australia -----Original Message----- From: PDML [mailto:pdml-boun...@pdml.net] On Behalf Of David Mann Sent: Friday, 28 February 2014 7:32 AM To: Pentax-Discuss Mail List Subject: Strange old colour film Here's something the more experienced photographers might be able to help me with... Among these old slides I've been scanning are a handful of colour ones which are not part of the Australian stuff. A few of these colour ones (but not all) appear to have a kind of halftone pattern. See here for an example at 1200ppi. http://gallery.multi.net.nz/photo/771/ As you can imagine it's fiendishly difficult to scan. Once I have a good scan (ie not blown out) it's quite easy to get rid of the pattern in Photoshop. Note I haven't done any colour corrections other than increasing the brightness a bit. I've had a look using a 10x loupe and it looks a bit like an LCD screen but is hard to make out at such a low magnification. I might try a higher res scan later, and I'll find out whether the microscope at my wife's work has a camera. Could anyone fill me in on what the film might be? The photo in the pic was taken in 1951. In case you're curious it's part of a photo taken at the top of Dyers Pass after a snow storm. I might post the full pic in future. Cheers, Dave -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
