Re: On Libration

[gnored@xxxxxxx (Gary Nored)]

>>On libration: a stereo photographer could get a true stereo portrait by asking the subject to turn slightly left or right. However, the background would not be shifted. Would the photo look unusual or less stereoscopic? Addenda?--Assessments???--Replies???

>I should think this would look VERY odd. 

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I would have thought so too until I tried something like it. My neighbor is a sculptor who makes small pieces typically mounted on a bearing so that the viewer can rotate them and explore many views of the piece. The bearing is usually mounted on some sort of fixed display base. 

I tried photographing the piece, turning it a bit, and shooting it again. When viewed stereoscopically, the results were surprisingly tolerable. By studying the image you can see that there is more depth in the front than the back. Of course, the base has no dimensionality at all -- yet I have shown these photos to several artists, and none of them noticed anything wrong at all!

I continue to marvel at the human brain's ingenuity in making "odd" information appear normal! Of course, if the subject's expression changed, even a little ... 


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