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Dual Camera convergence points
- From: PHOTO3DGUY@xxxxxxx
- Subject: Dual Camera convergence points
- Date: Mon, 11 Dec 1995 10:29:38 -0500
I've been in the desert the past week so I'm catching up on lots of digests.
For about 30 years now I've shot primarily twin cameras on a bar exclusively
for the purpose of projecting the full frame images in shows. I've tried
parallel and toed-in, and everywhere inbetween. Not being much into physics,
or math, or engineering, (or years ago having access to so much sharing of
information) I developed my own style of checking the left and right TTL
viewfinder, and aligned the right edge of left image, and left edge of right
image to create a "correct " left and right window for the scene or object
or lens (I use both 35mm and 50mm).
Viewing the results in a 2x2 viewer or projecting usually yields good window
effect and vertical alighment only if you re-mount every slide to achieve
identical horizontal and vertical positioning since the labs are not
consistent in where they position slides in commercial mounts.
Now I'm planning on duping images to create realist type mounts and I also
want to convert some of them into viewmaster type chips to create my own VM
reels.
? Questions:
* Seeking suggestions and input on ways to create realist and VM chips from
full frame.
* Since the full frames were not created in a strictly parallal alignment, is
this going to cause some grave problem.
* Where can I obtain lenses so I can experiment with creating my own 2x2
viewer. I am extremely nearsighted and would like to create a viewer that
would allow me to view my 2x2's without my glasses so I can see the full
frame (edges get lost now when viewing with glasses)
* Lastly, is there a splitter on the market that will create panorama. By
this I mean, place a left panorama image on the top half of a 35mm frame, and
the right panorama image on the bottom half of the frame, and then of course
a viewer like the loreo that will reverse the process for viewing. It would
be like seeing "letterbox" video but as a 3D transparency.
Footnote: I've got Kodachromes that are 30 years old that still look more
vivid than some of today's emulsions. But they retain their quality only if
you keep them out of the projector. Photographic images, like computer data,
must be backed up from time to time. Never only have 1 copy of something
that is irreplaceable (and important).
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