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Some of the re-released "action" movies in 3D are fun to watch but the 3D effect is computer generated and not true "stereoscopic" 3D and if you want to see the picture a second or third time you will probably enjoy the 2D original better.
For TV at present the switch mode viewing glasses give the best results (at a reduction in brilliance), but progress is being made in in passive glasses technology and the average viewer probably won't notice the difference and of course there is a lot of red/blue 3D free on the internet with the special viewer program and red/blue glasses.
For Movie screens polarised glasses are used to separate the left and right images that are thrown on the screen together.
The old re-releases can only be made 3D when there is movement of the "in focus" object so only some films are suitable for computer 3D generation.
Some of the newer films have been made with true 3D cameras. I think Avatar was and I think Hugo is too. but the technology is complicated and expensive and production is not economically viable unless a substantial return can be assured.
Cameras (Sony) can be bought to produce 3D movies in the red/blue technology but are quite expensive.
However I believe 3D is here to stay and will be developed and the special viewing requirements will eventually be overcome.
A bit like we were told about the take up of colour TV in the late 60's. Surveys said colour TV would not be taken up by very many because it would be expensive. But I was experimenting with colour TV and told everyone that this was not true and when it was seen in operation they would mortgage the house, sell the wife and kids etc just to get one.
Barry
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