On Feb 28, 2014, at 12:27 pm, steve harley <p...@paper-ape.com> wrote:
> can you post a snip at 100%? OK since it's started raining and I have nothing better to do I've rescanned a section at 4800ppi. It just gets weirder. http://gallery.multi.net.nz/photo/777/ It's definitely RGB but in a crosshatch pattern. I am stumped. Here's the full frame with some quick Photoshop adjustments: http://gallery.multi.net.nz/photo/778/ The crop is from the left of the column's plinth. The slide measures 56x54mm; close enough to 6x6cm format. I'm still trying to organise access to a microscope but that's looking unlikely as the one I had in mind doesn't have a camera attachment. > the pattern as far as i can make it out doesn't have traditional halftone > angles, and appears to be RGB, rather than CMYK; this would suggest it was > shot from a display or some other transmissive, rather than reflective, > source; what that could have been in 1951 i have no idea - is the actual > slide from 1951, or is it perhaps a repro slide shot off of a video of the > original? Interesting, isn't it? I'd love to get the slide out of its mount but I'm unwilling to remove it (I'd want an archivist to do something like that). I've also noticed a fairly prominent hair in red so I'm wondering if each colour was developed separately. I've heard of a process where each primary colour is shot on B&W film through a filter then reassembled later. I might also send it to my favourite camera shop, they have a couple of older guys there who might be able to offer an explanation. 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.
