Re: On Libration

[LDAEnt@xxxxxxx]

Marvin Jones writes:
>I should think this would look VERY odd. Not only would the background have no
>depth, as you noted, but the subject's position relative to the background would
>not change in the two views, which would create an unnatural relationship between them.

This reminded me of a device detailed in the "Stereoscopic Phenomena of light and sight" by Theodore Brown(reprints from Reel-3D). He mentions a stereoscopic table that is a turntable with a protractor attached. By rotating an object 5 deg. you get your stereo pair. He states that the background is perfectly plain and is placed some distance behind the object, and care taken to prevent shadows being cast. A sample photo is included, and it does not suffer any of the unnatural effects. Certainly a plain and shadow free background is essential.
By the way , for everyone on this list who thinks to themselves "Aha! I have and idea for stereo photography that I'm sure no one has thought of before" , read this book. It is a great "humbler" for your ego. It has humbled me many times. This book was written in 1903, and is full of relevent theory and practical construction suggestions for just about anything. You will be amazed at the level of creativity and technical knowledge from the past. I have realized that there is not a great amount of invention going on in stereo photography in modern times, but rather a great amount of innovation. 

Alan Lewis



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