<<<....... the stereopticon would have to have side-by-side lenses instead of one-above-the-other lenses, just to make room for the shift lenses.>>>
Stereo/3D uses 2 separate images spaced laterally at roughly eye spacing [YMMV] so the lenses MUST be side by side taking or projecting. Photographs were made to be contact printed and viewed in the holder/viewer that allowed one's eyes to merge the two images into a , voila', 3D image. Other later methods use red and blue images viewed thru cheap 'spectacles'. Dunno how the CGI folks do it these days, nor do I give a care, even tho' I look forward to the day when actors will not be required at all, and the Hollywood Creeps disappear
Quote:
Originally Posted by BillinGlendaleCA
I think you're right, my dad shot mainly Kodachrome and they maintain their color really well. The times that he used Ektachrome, I've noticed a color cast. Most of the slides I'm talking about are in the 60 to 70 year old vintage. I've been scanning all of our old slides.
|
The Kodachrome process- actually the SECOND by that name as the first was quite different, using red and blue only, superposed- put dyes into the emulsion in processing, instead of carrying the dyes IN the emulsion.
Dyes in the emulsion were short-lived, as demonstrated in the example.
Technicolor movies were made by photographing three B&W images thru color filters and re-assembling them by printing with three colors. Obviously producing a very vivid and long lasting final movie.
Stunning color prints were made by a similar process , known as 'Dye Transfer", Three filtered B&W shots, each enlarged onto a transfer film , each of which was dipped into the appropriate dye , sequentially impressed onto the paper in perfect [ if done right] register
Then Kodak came up with Kodacolor for print film , a similar [cheap] movie film and Ektachrome. If one can see a film box, on one side is a disclaimer that read something like "All dyes may fade in time [..not our fault]..
Indeed, many such movies have been lost to fading. IIRC UCLA has a restoration program but the color films of the late 40s early 50s are doomed.
Fortunately, we don't care at Noir
All that said, Ektachrome E6 process is still available and has storage characteristics very close to Kodachrome. Some folks say that it will be around a little longer as the movie folks made a several year commitment to purchase movie stock. One rumor is that, although the makers like to shoot on digital, they archive on film