On Thu, Sep 03, 2009 at 09:04:15PM -0400, Scott Loveless scripsit: > On 9/3/09, Graydon <[email protected]> wrote: > > On Thu, Sep 03, 2009 at 08:54:58PM -0400, Desjardins, Steve scripsit: > > > I didn't realize they could do color that well back then. > > > > Arguably, they couldn't; it was a three-sequential-negatives process, > > and really tough to put back together chemically to get a colour image. > > > > If I'm following the various articles correctly, many of the images now > > available were not available at the time; digital recombination is much > > easier and the Library of Congress had all the possible ones done. > > I thought it was 3 monochrome positives projected through 3 separate > filters. Red, green and blue, or something like that. And that > getting the projectors set up properly was the hard part. Or maybe > I'm smoking crack again.
That was the display technique, but (and I could be out to lunch on this) I understood that there was some mechanism to get a print, too. I might be very wrong about that. -- Graydon -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
