Hi Alberto,
Congratulations on your project! I like to look at a stereo pairs with eyes
parallel rather than cross eyed. To each his own I guess! My students made
anaglyph pairs like you related - shifting weight and then "processing" in
PS. I have one small example of 3D (parallel view) here:
http://www.rit.edu/cias/photo/a-postcards/postcard-edgerton-front.jpg
It is a (I believe) unique 3D photograph of Harold Edgerton and William Hyzer
made in 1982 at a conference in San Diego at the Coronado hotel. Made with
a surplus Wollensak stereo lens board adapted to a 4x5 capable "box". So made 2
3D sets on each sheet of 4x5 film. I am cheap!
Andy Davidhazy
Alberto Tirado wrote:
Hello everybody!
Just a short note to let you know about my most recent photo experiment.
Several years ago I was at a science fair in Tucson and I saw for the first time a stereogram. They had an aerial photo under a stereoscope. I was so impressed that I wanted to do something like that, but I never actually get a stereo camera nor stereoscope (but I did some rudimentary experiments with hand-held mirrors - in retrospective, I could have cut my nose *blush*). That was way before Al Gore invented the Internet and so I eventually forgot about it.
Quite recently I came across some stereograms on the net and I realized that I could look at them in all their 3D glory if I cross my eyes. Soon I was doing my own, and I haven't perfected the technique, but I am quite satisfied.
A widely known technique, the Anaglyph, is a 3D image that requires bi-color glasses (red and cyan). However, stereograms retain full and faithful color information. Besides, I discovered that "wearing" a red 25 and blue 82B filters do not help much in the computer screen (the blue isn't right, and besides my monitor is quite off, I discovered).
I do my El Cheapo stereograms shooting hand-held and just stepping to one side for the second picture. High resolution allows me for some error (so I can crop the images) and with digital technology I can have them pretty easily. So far I have been doing close scenes (indoors, or statues) I change the angle of the picture slightly to get the "cross" effect. I put the images in one file, one next to the other in photoshop and voilá!
The only sad part is that not everybody can watch them until they master their cross-eye technique (and you have to be careful for distracting reflections on the screen surface). But so far, I am happy.
Hey, perhaps I can prepare a conference for RIT sometime! ;)
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www.alberto-tirado.com
