Drongo
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A few of you may have read comments; where I have said that I love 3D on my smallish tv at home; but often find 3D at the cinema rather anaemic. The images lack solidity and the illusion of 3D is not always convincing.
I have speculated that this may be to do with the brightness of the projected image. Although; cinema projectors are capable of very high light output, when you average the brightness over a very large screen, the amount of light per unit area is probably less than can be achieved on a 3D tv.
I have just heard about a new technique for projecting 3D images at the cinema. It is called Colour Separation Projection. The essential difference, as I understand it, is that two projectors are used to overlay both left and right eye images. Because both left and right eye images are projected at the same time and not alternated; you end up with a substantially brighter image than with conventional cinema 3D. Also; the stereoscopic effect is created by using 3D glasses that filter different wavelengths of light in each eye. Obviously; the projected image of each projector consists of slightly different wavelengths of light. Separating the left and right eye images this way; results in much less light loss than you get using conventional Polarised glasses.
The very brief clip below; shows Christie Laser Projectors providing the muscle for the 3D Colour Separation film showing. Whether Colour Separation Projection would work as well (if at all) with standard cinema projectors I don't know.
I'm not sure how long it will take to get this technology into my local fleapit (if ever!) but this looks really promising for those cinema users who enjoy 3D.
I have speculated that this may be to do with the brightness of the projected image. Although; cinema projectors are capable of very high light output, when you average the brightness over a very large screen, the amount of light per unit area is probably less than can be achieved on a 3D tv.
I have just heard about a new technique for projecting 3D images at the cinema. It is called Colour Separation Projection. The essential difference, as I understand it, is that two projectors are used to overlay both left and right eye images. Because both left and right eye images are projected at the same time and not alternated; you end up with a substantially brighter image than with conventional cinema 3D. Also; the stereoscopic effect is created by using 3D glasses that filter different wavelengths of light in each eye. Obviously; the projected image of each projector consists of slightly different wavelengths of light. Separating the left and right eye images this way; results in much less light loss than you get using conventional Polarised glasses.
The very brief clip below; shows Christie Laser Projectors providing the muscle for the 3D Colour Separation film showing. Whether Colour Separation Projection would work as well (if at all) with standard cinema projectors I don't know.
I'm not sure how long it will take to get this technology into my local fleapit (if ever!) but this looks really promising for those cinema users who enjoy 3D.