Re: Projection continued...

[fj834@xxxxxxxxxxxxxxxxxxxxx (Dr. George A. Themelis)]

Eric continues the string of most interesting postings regarding stereo
projection and more...

>The most important thing I learned in projection was something that I'll
>paraphrase from the literature that Dr. T enclosed with the Vivid (I don't
>know where this came from... Dr. T?)  It says that "A stereo photo is a
>composition in depth.

The literature comes from Earl E. Krause's book "Three-Dimensional
Projection", 1954, a small paperback (125 pp.) difficult to find and the
only 3-d book dealing exclusively with stereo projection.  I believe that
Krause worked for TDC for a while and has written the TDC projector
manuals.

>This knowlege is going to allow
>me to use the window as a compositional element rather than an annoyance at
>the edge of my  pictures, to bring things out of the window when appropriate,
>and generally gain more control.    

I could not say it any better than that.  The stereo window is even more
important in stereo projection.  I try to bring my subjects close to it and
through it if possible and if appropriate.  Good mounting and good
understand and control of the stereo window has a strong impact on
projected slides.

>I think you get the idea that each of these variables, and probably many
>others, are adressed every time we take and show a 3d photo.  It's a great
>deal to pay attention to, and we should congratulate ourselves for getting
>them all even close enough to get decent images from time to time. 

I think you should cross out "decent" and put "great" instead.  Almost
every one can take decent images with a regular stereo camera.  People were
doing it in the 50s even though they did not know much about photography
and there were not aware of this long list of variables.  By either pure
luck or a good undertanding and control of these variables we can get great
images from time to time...

George Themelis


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