I noticed no rolling shutter effects, Cableaddict. I think what you are seeing is an imperfect gyromount in the helicopter. The guys over at Luminous Landscape are also saying that the camera lacks any noticable rolling shutter problems. Apparently there are a number of professional HD video cameras (SONY EX-1 for one) that use CMOS sensors, and although they have rolling shutter effects, its so minimal that it doesn\'t even matter. In fact, the fabled RED One has rolling shutter effects, but that did not stop people from making multi-million dollar films using it. See http://www.luminous-landscape.com/reviews/cameras/5dmkiipre.shtml for details.
Directly from that site:
Jelly?
I was on the lookout for Jellocam, an artifact that is seen on any motion camera that uses a CMOS sensor. This can be caused by the sensor not recording the image all at once, but rather in a pass from top to bottom, which means that if anything is moving in the frame during that 1/30 of a second it will appears to shimmy and bend.
This is a problem that is much discussed in the video world. The highly regarded Sony EX-1 (which Chris and I, and many pros and broadcasters use) has it, but to such a small extent as to not be much of an issue at all. The RED One camera has it, but so little that it doesn\'t seem to bother film makers shooting multi-million dollar feature films. The new D90 shows it quite badly on the brief demo clips that have appeared online, but how big a deal this turns out to be still remains to be seen once demo cameras become available to knowledgeable reviewers.
As for the Canon 5D MKII – I see no jello-ish artifacts. I\'m not saying that they may not be there, but in the day of shooting that I did, taking quite a few shots to specially look for it, I didn\'t see any.Jelly? I was on the lookout for Jellocam, an artifact that is seen on any motion camera that uses a CMOS sensor. This can be caused by the sensor not recording the image all at once, but rather in a pass from top to bottom, which means that if anything is moving in the frame during that 1/30 of a second it will appears to shimmy and bend. This is a problem that is much discussed in the video world. The highly regarded Sony EX-1 (which Chris and I, and many pros and broadcasters use) has it, but to such a small extent as to not be much of an issue at all. The RED One camera has it, but so little that it doesn\'t seem to bother film makers shooting multi-million dollar feature films. The new D90 shows it quite badly on the brief demo clips that have appeared online, but how big a deal this turns out to be still remains to be seen once demo cameras become available to knowledgeable reviewers. As for the Canon 5D MKII – I see no jello-ish artifacts. I\'m not saying that they may not be there, but in the day of shooting that I did, taking quite a few shots to specially look for it, I didn\'t see any.
Sep 22, 2008 at 11:40 PM
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