Two-strip IMAX 3D film projected on a domed screen with the PSE LCD glasses. The 3D image literally surrounded you, as you could turn your head to view a wrap-around 3D image.

AFAIK, "Race for Atlantis" at Caesars World in Las Vegas is shown using a similar process, but is CGI rather than live action:
http://www.imax.com/raceforatlantis/tech.html

Even on a flat screen, IMAX 3D is very impressive if done correctly.

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John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Eastman Kodak Company
Research Labs, Building 69, Room 7419
Rochester, New York, 14650-1922 USA
Tel: 716-477-5325 Cell: 716-781-4036 Fax: 716-722-7243
E-Mail: john.pytlak@kodak.com
Web site: http://www.kodak.com/go/motion

I'm hoping to see JOURNEY OF MAN next week, which I've heard is very good also.

Looks like many of the commercial IMAX houses are playing 35mm this summer...too bad there's not enough exciting large format product out there. BUT, that's another topic.

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Just some observations:

Keeping the projectors in sync, whether by physically locking the moters together, or electronical with selsin moters, is not a problem. The problems arise when the left and right eye prints are threaded out of sync, or spliced out of sync. Think about it, if you have a film break on 1 print, and take out a few frames to fix, you have to find the exact location (to the frame) on the other print, and remove the same. If not, it causes eye strain. Also, when you thread the projectors, no only must you thread both prints starting at the exact same point, but you need to make sure the shutter on the 2 projectors is at the exact same point. If not, again eye strain.

Many of these films were later re-issued on single strip 3d, either over under or side by side. Neither is as sharp or clear as dual strip. Then even worse, since polarized 3D requires a silver screen, many were later converted to anaglyph (red/cyan) which is headache inducing, but can be projected onto any screen.

3D done right is fantastic.

Setting the correct inter-occular distance is important too, too little and you kill the 3D effect, too much and you get great eye strain by causing peoples' eyes to go wall-eyed.
Ugh, it hurts just thinking about it.

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There were also 3D titles put out that used synchronized LCD shutter glasses ala IMAX. These used the alternating video fields to display the L & R images. The system gave full color images but at half vertical resolution.

Then there's those 3D rollercoaster videos and DVDs that use the principle of delaying the light entering one eye through the use of glasses with plano lenses of differing thickness. I've not seen these myself but various reviews I've read indicate that this 3D process is inconsistent at best--basically it works only on moving images with static images literally falling flat.

Cheers!

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