Re: [photo-3d] Re: srrange 3d attachment

[Peter Davis <pd@xxxxxxxxxxxxx>]

From: Peter Davis <pd@xxxxxxxxxxxxx>

At 05:29 PM 3/27/00, you wrote:
>From: Mark Shields <beamsplitter@xxxxxxxx>
>
>That's the only one of these I've ever seen, although I think
>someone on the list mentioned rotating an ordinary beamsplitter
>90 degrees to get the same effect. I never tried it.


Rotating an ordinary beamsplitter would NOT work.  Then you would just get 
top and bottom images instead of left and right.  The prism unit uses 
prisms and mirrors to take left and right images and rotate them 90 degrees 
on the film.  The viewer then does the reverse.  I don't know how good this 
unit actually is, but the idea is interesting.


>Of course
>then viewing would become a problem if you didn't have the
>special viewer. Certainly this setup looks awkward to use, even
>if you _do_ have that special eyepiece for your SLR (which would
>probably fit only a Canon).

Lots of camera makers have right-angle eyepieces available as optional 
accessories.

>The prism takes the place of the two
>inner mirrors in the usual beamsplitter, and is probably the
>reason the unit is at an angle instead of pointing straight
>forward. Of course you know I think Pentax had the better idea,
>which is why their beamsplitter outfit is still made!  :-)
>(And it's still my #1 choice for my own personal shooting.)
>OTOH, if you're really into panoramic views, this may be just
>the thing! (The auction is now closed, but for the curious it's
>certainly worth a look--lots of pictures of the device.)

--------
                              Peter Davis
                Funny stuff at http://www.pfdstudio.com
                "The artwork formerly shown as prints."
            Resources for children's writers & illustrators:
                   http://www.pfdstudio.com/cwrl.html











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