In reporting on the National Association of Broadcasters convention, which is meeting this week, Variety had this to say:
Certainly there’s a sense of real change in the air, especially after Monday’s 3D television pitch by James Cameron and Vince Pace. Along with growing acceptance of 4K, Sony’s new F65 camera showing off 14 stops of dynamic range, new TVs and digital cameras that display a wider range of colors than before, there’s some real momentum behind improvements in sound and picture that have been on technologists’ wish list for years — in some cases, decades.
But this year’s biggest leap forward seems to be in the move to higher frame rates. Cameron has been evangelizing the idea for years, and Doug Trumbull, who pioneered the idea with Showscan in the 1980s, presented an updated concept, Showscan Digital, at the Digital Cinema Summit on Sunday. Then Peter Jackson confirmed rumors that he’s shooting ‘The Hobbit’ at 48 frames per second, in addition to 3D.
While some people still love the 24 frames-per-second look, the shift to higher frame rates doesn’t need to incite a debate like that surrounding 3D. What’s more likely is that that filmmakers and all manner of content creators will now choose their preferred frame rate based on the look they want to achieve, much as they now choose a color palette and filters.
I’m not sure why some people are so enamored of 24 fps, a filming/projecting rate chosen in the early days of sound filmmaking. As you’re watching a film in a theater, 24 frames are projected on the screen per second. In the interval when the film is moving to the next frame, a shutter crosses the lens, and there’s a tiny moment of darkness on the screen. It’s too tiny for our eye to notice ordinarily, although in very bright scenes one can sometimes see a distinct flickering. The same is even more true when a silent film is projected at 16 or 18 or 20 fps, since the tiny moment of darkness is slightly longer. In short, by projecting twice as many images per second, the filmmakers can cut down even further on the length of split-second of darkness.
Shooting more images per second also minimizes blur. In shooting 24 fps, the film is exposed long enough that rapid movement in front of the camera will blur, especially if it’s moving from side to side. (You can easily see just how blurry individual frames can be if you freeze-frame a DVD during a movement of quick action and then go through frame by frame. There’s a lot of blur!) By making the exposures of the frames half as long, the camera can minimize the blurring.
The Variety report suggests that professionals in the film and television industry see shooting at increased frame rates like 48 fps is a very major development, and once again Peter’s team is leading the way.