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Posted by Dave Ganoe (Member # 53) on 10-02-2000, 06:05 AM:
I have a print of Amityville and it is in 3D. The image is what I believe is called over/under as for each normal frame of the 35mm image there are 2 images, each just slighty different from the other one. What kinda of lens is needed, what type of glasses is needed, and where can I get the lens and glasses? I would appreciate any information that someone can provide? Thanks.
Posted by Pat Moore (Member # 380) on 10-02-2000, 10:37 AM:
Hmm -- The glasses are a tough one there. They may still be available from some dealers around the country, have you checked any of the classifieds in Film Journal or Boxoffice? Also, I don't have a number with me, but a company called "Stereovision" was doing this stuff for years. I think they are still in the Hollywood area.
The lenses are available for over-under 3D, but they are a little harder to get and are not available in too many focal lengths.
Posted by John Walsh (Member # 168) on 10-02-2000, 10:38 AM:
We used to have one of those... If I remember, you don't need a different lens.
You use your existing 'scope lens. If the frames are the "over-under" type, you turn the scope lens 90' from normal. If the frames are the "side-by-side" type, the scope lens stays normal. You bolt a fixture onto your existing lens. This fixture holds a prisim-like adapter in front of the lens and redirects the image so both halfs converge at the screen.
You will also need a test film that usually comes with the fixture.
Wow, I hope I'm right. I haven't seen that system since "Jaws-3D"
Posted by Gordon McLeod (Member # 33) on 10-02-2000, 05:29 PM:
The mirror box was the most popular type for over under 3d and they regularly show up on ebay
The mount infront of the flat prime lens and one adjusts the two mirrors(prisims in some cases) to converge the image
Posted by David Kilderry (Member # 142) on 10-03-2000, 12:46 AM:
Dave,The print you have is Amityville - 3D ie the 3rd film in the series that was in 3D. Like Jaws 3D both were from 1983, the last big 3D craze.
Glasses are available through a company that advertises in Boxoffice magazine. Stereovision was the company and as already stated may still be in business. It all started up with that really crappy "Comin' At Ya" made in Spain I think - the effects were good though.
Saw it at Cinema North in 1983 at 1.00pm on a Saturday afternoon, how do I know that? I wrote all the films down that I saw back then!
David
Posted by Dave Cutler (Member # 515) on 10-04-2000, 06:51 PM:
I think I have seen the 'Stereovision' lenses still listed on either the ISCO or the Schnieder web site, maybe both. So you should be able to purchase one.
Posted by Brad Miller (Member # 2) on 10-05-2000, 02:58 AM:
Anyone who has these might want to hang onto them a bit longer. There is a strange rumor going around about Rugrats 2 being in 3-D. 
Posted by Stefan Scholz (Member # 147) on 10-05-2000, 03:52 PM:
Isco still covers a stereo lens for the over/under type pictures.
The thick line is the seperation between both pictures, the thin line is the frame line.
Prismatic converters were most common, but also split lenses like the Isco.
I still own a set of 3 D lenses for Paramount films - and the virtually indestructable plastic test film, as well as 2 cartons with each having 1500 paper type glasses. The polarizing glasses must still be around, as 3D is still a common fairground / theme-park attraction format.
Beware, not all prints are compatible with each lens. The Paramount format was called Sirioscope, my lenses are 55 mm, which would relate to 110 mm scope focal length.
Theese lenses are not compatible with films shot in Arrivision 3D, even though the films (e.g. Silent Madness - famous at splatter freaks for the power drill for brain sequence) look the same... And use 2000 ft changeover with cold-light filtering, as otherwise the polarizing filters will overheat, and go defective.
I remember, that Paramount distribution over here used to have some lenses at their offices, but were hesitant to give them away, as they said, they were costly... Maybe your distributors do still carry one or another-
Posted by Gordon McLeod (Member # 33) on 10-05-2000, 04:41 PM:
The problem with the split lens is that they have convergance for a specific spacing
There were many frame centering spacings as there were movies
The prism/mirror box is a safer investment