|
This topic comprises 2 pages: 1 2
|
Author
|
Topic: Awesome 3D festival in San Diego
|
|
|
|
|
John Spooner
Expert Film Handler
![](http://www.film-tech.com/ubbmembers/1565.jpg)
Posts: 186
From: South Australia, Australia
Registered: Jan 2003
|
posted 08-16-2003 02:16 PM
Dear Tim. In regards the 3D screenings you will be operating at. Would you let me know what types of optical systems are being used. I operated at most of the 3D screenings in Adelaide when they were held . Used both types of flat Stereovision optics , being the combined prime lens and polarizer system in one common barrel, and the secondary separate polarizer system consisting of 2 adjustable prisms in a metal box which mounted on the prime backing lens. These were for top/bottom format. Also we showed "House of Wax" many times (side/side) which was a flimsy plastic attachment which mounted on the existing Scope lens, the resultant image appearing in 1:33 ratio. With the top/bottom type , be very careful not to "tear" the image, the images must be exactly level, there can be no vertical misalignment as the eye is very sensitive to such , and eyestrain will result. However the horizontal line up is not so critical, you can move the 2 images outwards and we found this actually improved the 3D effect. As a matter of interest, "H O Wax" uses a standard Scope aperture plate, but top/bottom uses a much larger plate. If the scope plate is used there will be image cut off and dark top and bottom. Finally as you would know as a professional, splicing is critical. If 2 holes out, reverse 3D occurs, if this happens rerack down or up 2 holes and image will correct. The frameline should be marked with a small diamond or will be thicker. Best regards. John Spooner. South Australia.
| IP: Logged
|
|
|
|
|
|
|
|
|
|
|
|
|
All times are Central (GMT -6:00)
|
This topic comprises 2 pages: 1 2
|
Powered by Infopop Corporation
UBB.classicTM
6.3.1.2
The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion
and agrees to release the authors from any and all liability.
|