P3D R: 3d stereokit, twinng question, franka

["Sergio Baldissara" <winter@xxxxxxxxxx>]

> Date: Wed, 1 Mar 2000 13:30:52 +0100
> From: PZuijlekom@xxxxxxxxxxxxxxxx
> Have a look at the following site :
> http://hugeidea.iwarp.com/
> Does anybody know what kind of thing this is ?
> It says : Make any camera into a Stereographic Camera.
> Is it a beamsplitter ?
> Found the information on eBay
> (http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=270578377)
>
well, if you're curious you can buy the plans and tell us: anyway both the
improved Loreo camera and te Franka splitter cost $45, so I don't believe
that $10 (the plans) + $20 (the hardware, as advertised) would be a great
deal. (unless one thinks the  home-crafted device can give comparable
results).

> Date: Wed, 01 Mar 2000 09:49:07 +0000
> From: Ray Hannisian <ray@xxxxxxx>
> Can someone recommend anaglyph conversion software for Macintosh?
>
I really can't understand why people often look for anaglyph conversion
software. I get anaglyphs in a few minutes just by setting to zero the R
channel of the left view and GB channels of the right view. Then I set
tranprency at 50% and overimpose the images to match the best stereo effect.
It remains just to do some adjustments to brightness and saturation & to
crop...  Not more that the usual things any photo editor can do!

> From: "David Lee" <koganlee@xxxxxxxxxxxxx>
> Subject: P3D Re: Twining question
> > I have a Noblex 6x17 camera. This shoots a panoramic (~140 degree) view
by
> > swinging the lens and projecting onto a negative that is curved  instead
> of
> > flat in a normal camera. That is the filmplane follows the same diameter
> > curve as the lens swings.
> >
> I have shot a few stereo images with a camera called a Panon. This camera
is
> about 6x12 with a 50mm lens (very wide angle) if I recall, with a swinging
> lens similar to the Noblex. The images seemed to work out okay, but be
I'm tempted to try the same with a much cheaper camera (Horizon) & I wonder
how to calculate the stereo base.
what maximal horintal separation of matching points (linear parallax) should
I consider? books recommend 1.2mm for 24x36 and  3mm for 6x6 negs, say 1/30
of horizontal side or roughly 2° viewing parallax.  In this case should I
consider the whole horizontal side or just an "angle of attention"?

> use 12cm or so. For viewing you may have to use an over/under viewer such
why not anaglyphs?

> From: "Huss@xxxxxxx" <huss@xxxxxxx>
> Subject: P3D Franka Beamsplitter: Beginner's question
> I bought a Franka Beamsplitter and I am trying to use it with my Canon
> EOS100 . I am sorry for the extremely beginner level of my question, but
> what kind of lens should I use before a Franka Beamsplitter? I cannot
figure
> out how to make good stereo pairs with the pair of lens I have.
>
> I suppose the arrangement should be:
>
>                      Lens  <
>        | EOS body  |======[
>                            <
>                           Beamsplitter
>
I'm sorry, Claude, but I'm not able to decriptate your sketch. Anyway you've
just to plug the bayonet of the coupling ring on your splitter and screw the
whole assemby on the front of your lens.
Usually beamsplitters work on 50-55 mm lenses, but with I noticed parasite
reflexions with a 55mm lens. Those reflexions disappear if I mount my Franka
on a 40mm lens, so now I wonder if the Franka will also work on 35mm.
Sergio