This is precisely why one should shoot at 1/50th of a second on their HDSLRs and use ND or neutral density filters to makes sure they don't have too much depth of field and can also ensure they aren't forced into shooting at higher shutter speeds. And here comes the big question, is doubling the frame rate from 24 to 48 perin 3D really that good for a movie and does it make the experience much better? We’ll have to wait and see after watching the HFR 3D version of the movie, and when you do so as well please share your feedback as well in the comments below.The reason the standard film projection rate of 24 frames per second works so well, is that it's just a few frames faster than what the brain needs in order to be tricked into seeing what are effectively still images, appear to move on screen-it's called the "Persistence of Vision Theory." In tandem with that important theory, he motion blur you get by shooting at 24 fps and (on a standard 180 degree shutter) at 1/48th of a second, is just as important in making something look "cinematic" as the lack of depth of field we get by using larger sensors, and bright lenses at large apertures. James Cameron is apparently also interested in the high frame rate 3D format, so he might be using it for some of his upcoming 3D movies. The movie will also be available in 2D, 3D, IMAX and IMAX 3D format, apart from the HFR 3D format that Peter Jackson is trying to promote and that he has announced to be used also for the sequels of the movie – The Hobbit: The Desolation of Smaug and The Hobbit: There and Back Again. A short official FAQ about the HFR 3D (High Frame Rate 3D) format using 48 frames per eye in 3D mode that will be available as an option for watching The Hobbit: An Unexpected Journey.
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