[photo-3d] Re 3D Kaleidoscope photography

[Peter Homer <P.J.Homer@xxxxxxxxxxxxx>]

In digest 547 Martin Simon wrote

>There may be a method using two trapazoidal shaped mirrors that
>will work better for 3-D.  Both small forward edges are horizontal
>with the top mirror tilted up and the bottom tilted down.  Both your
>eyes would fit into the larger open end and there would be room
>for a camera shift.  It doesn't have the same symmetry as a traditional
>kaleidoscope but it may work better.  If I remember right there is a
>patent on something like this

I have a book on Kaleidoscopes "Kaleidoscope Renaissance" by Cozy Baker which describes a number of them as "3D" including a type which seems the same as he described "Tapered mirror systems provide a spherical 3-D image when viewed through the larger opening" its not clear whether this has to be large enough to view with both eyes or if the term 3-D is meant as we would use it. Some of the photographs through kaleidoscopes in the book look very 3-D but in the computer graphics sense of the word. Some of this seems to be due to the use of thicker objects than normal and sometimes lit from above allowing relief to be produced by shadows but one example where the colours are produced by polarised light would probably  be transmited. The spherical 3-D images seem to have the 3-D limited to the sphere so that the 2-D patterns appear laid over a sphere rather than a flat disc. A Doug Johnson produced a binocular kaleidoscope with two viewers which focuson on one set of wheels calle!
s a bi-scope stereo or 3D is not
 mentioned, but another version of it "Which includes a special mirror that allows pastel tinted images to enter the visual field through the body of the scope.The blending of these images with those entering through the end piece creates highly sophisticated and MULTIDIMENSIONAL images".
Daniel Tarr's is refered to as a StereoScope and described as reminiscent of the old stereoscopic viewers with a pair of binoculars each with from 3 to 5 mirrors which fit right up around the eyes. This one is illustrated and the tubes view different halves of two removable colour wheels described as asymetrical although they seem to be viewing similar halves, it is said to produce a strong dimensional effect. Don Doak,s musical Geodyssey can be viewed with both eyes and gives a sphere effect even in the illustration. P.J.Homer  



 

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