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Night Sky Exposure


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#1 Jan Belina Brzozowski

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Posted 03 March 2012 - 02:24 PM

Hello,
I was wondering how was the exposure on the sky in the opening sequence of "The Social Network" made?
part1.jpg

Zuckerburg The American Cinematographer says:

"The Social Network’s first shot, a night exterior that plays during the opening titles, was perhaps the most complicated piece of the movie to capture. The sequence depicts Zuckerberg racing through Harvard Square and the university gates. Capturing the sweeping panoramic night exterior required all three Red Ones; images from the cameras were later tiled together into a single image to create an establishing view of Harvard Square, with the university in the background."

Does that mean HDR? multiple exposures? or was it added in post? Are the camera's today so sensitive that we can expose the sky at night?
Cheers
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#2 Ben Brahem Ziryab

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Posted 04 March 2012 - 04:27 AM

I don't think Jeff Cronenweth is referring to an assembly of exposures from the different cameras, but rather combining all three images into a panorama composite for a wider field of view.
Also the "sky" you're talking about is not really the "sky", but north light or something else in the background illuminating portions of the sky. It's really a simply matter of underexposing slightly and, of course, a lot of noise in the sky area had to be cleaned up.
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