http://www.lytro.com/cameras

Does it work without ranging? How?

According to articles, to get the depth of field, the camera's sensors does sacrifice some sharpness. Could be a worthwhile trade off for photographing movement, surveillance and facial recognition.

I know Adobe was working on something similar. But I believe their concept was a lens build of multiple lenses that would lay the focus on different spots in the image.

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1979 Black on Black, 300CD (sold), 1990 Black 300SE, Silver 1989 Volvo 780, 1988 300CE (vanished by the hands of a girlfriend), 1992 300CE (Rescue).

Fourier transform.

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You don't need a weatherman to know which way the wind blows - Robert A. Zimmerman

http://en.wikipedia.org/wiki/Fourier_transform

http://www.youtube.com/watch?v=gZNm7L96pfY

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'84 300SD sold
124.128

Fourier Transforms tells you where the repeated patterns are but doesn't tell you how to transform them to make the patterns intelligible.

In order to back trace rays that are not normal to the plane of observation you'll have to know the z ... the depth from the image surface, inward to the object of interest. If I'm right (!) then you have to know the ratio between the actual distance and the image distance, not unlike the classical lens computation, except it's probably an integral of some sort or other since you have to get the sum of rays over the domain of the image, for each point.

Another article. http://www.pcmag.com/article2/0,2817,2387422,00.asp

I'm wandering if you can choose multiple focus points: closeup and background for example, would be interesting in cinematography.

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1979 Black on Black, 300CD (sold), 1990 Black 300SE, Silver 1989 Volvo 780, 1988 300CE (vanished by the hands of a girlfriend), 1992 300CE (Rescue).

knave bardical duality....

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