Re: Late evening thoughts on stereo formats

[P3D Grant Campos <gc6094@xxxxxxxxxxxxxxxxxx>]

> 
> Your idea reminds me of something I briefly pursued in non-stereo
> photography a while ago, which might be of interest:  I always liked
> the look of transparencies (projected or direct viewed) more than prints
> because they have more dynamic range.  Some informed people told
> me that transparency material would be just as cheap as paper if it
> were mass produced at the same level.  It is also possible, although I
> don't know how expensive it would be, to make a "composite" stereo
> transparency with left and right elements having orthogonal
> polarization.
> Thus viewing with passive polarizing filters would provide superb
> images,
> viewable by groups of people at once, without turning off the room
> lights.
> Imagine:  One could actually have a gallery of stereo masterpieces
> that could be visited like any art gallery (except for the filters),
> wander-
> ing around and studying each image as long as you like.
> 
> Does anyone have any thoughts on (1) whether this would really be a
> good thing (2) how to make a "composite" stereo transparency?
> 
> Greg Marshall
> 

I think you have described polaroid's vectographs, from around the 40s?
Do a search on the P3d archive on vectographs and see if this is what you 
mean.  I have some vectographs that you can hold up and look at with stereo 
polaroid glasses and see clear ghostless 3D.  I think they were only in 
B&W, though I'm not sure.

Grant
gccampos@xxxxxxx


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