P3D Re: Steve's twin rig

[Steve Berezin <sbere@xxxxxxxxxxxxx>]

JNorman805@xxxxxxx wrote:
> 
> Steve Berezin writes:
> 
>  Both cameras would face the same direction but one would be upside down.
> 
>  Is there something I may be missing? >>
> 
> That's an interesting idea, if you are sure you want to go with a
> side-to-side horizontal format.  But consider that the tripod sockets on the
> Canon Rebels are centered precisely under the lenses. Therefore, if you went
> with a vertical format, and mounted the cameras bottom to bottom by their
> tripod sockets, the lenses would be exactly at the same level.  The rig looks
> a little odd, with the body of one camera offset from the body of the other,
> but the lenses point in the same direction.  With a 12 mm thick wooden bar
> between the two camera bottoms, the interoccular distance is about 75 mm.
> That's a little hyper, but not too bad for any distance over 8-10 feet.
> 
> Jim Norman

I have done that for verticals.  What I did is fashion a bolt and cut it
so that both cameras would fit together without a bar in between them. 
It was a bit tricky, because to put the cameras together it involved
rotating one camera to put it in.  I was able to align the cameras
optically which was precise enough for my requirements.  Doing this I
was able to get the interocular down to about 65mm.  The cameras were
light enough to carry on their own using one strap for both cameras. 
However I was constantly worried they would go out of alignment.

I am thinking of putting a thin metal piece in the back that would align
everything.
-- 
mailto:sbere@xxxxxxxxxxxxx
http://www.berezin.com/3d
Steve Berezin
Berezin Stereo Photography Products
21686 Abedul
Mission Viejo, CA 92691
USA