Rolling shutter on 5D Mark II vs GH1

salils

salils

Well-known member
Is there a comparison of the rolling shutter artifacts & jello from these camera yet? Which is better and by how much?
 
I don't have anything to show you as far as a visual comparison, but since both cameras use a CMOS chip and both chips use rolling shutter to expose the chip, as compared to global shutter, both cameras are going to exhibit wobble and skew effects to some degree.

In this direct comparison, the GH-1 shoots at 24 FPS in 1080p and 60 FPS in 720p. Shooting at a slower frame rate will exhibit more wobble and skew as compared to a faster frame rate. The 5D Mark II can only shoot in 30 FPS which will exhibit more wobble and skew as compared to the 60 FPS 720p mode of the GH-1, but less when compared to the 24 FPS 1080p mode. Shutter speed will only define, or mask the effects of rolling shutter. It will not eliminate it all together.
 
KeithAndrews.TV said:
I don't have anything to show you as far as a visual comparison, but since both cameras use a CMOS chip and both chips use rolling shutter to expose the chip, as compared to global shutter, both cameras are going to exhibit wobble and skew effects to some degree.

In this direct comparison, the GH-1 shoots at 24 FPS in 1080p and 60 FPS in 720p. Shooting at a slower frame rate will exhibit more wobble and skew as compared to a faster frame rate. The 5D Mark II can only shoot in 30 FPS which will exhibit more wobble and skew as compared to the 60 FPS 720p mode of the GH-1, but less when compared to the 24 FPS 1080p mode. Shutter speed will only define, or mask the effects of rolling shutter. It will not eliminate it all together.
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That is probably why Canon is getting away form the megapixel race.
You get better quality in both video and photos with lower megapixels (once you have at least 10 megapixels, and assuming you have 35mm full frame).

That being said, if the 7D has lower megapixels, it should be able to refresh faster thus producing less noticable rolling shutter.

Larger pixels will also allow for less moiré
 
According to Kholi, who's bought both, the jello in the Canon is a lot worse than the GH-1. Example quotes:

The (Canon's) jello, however, cannot be helped. By RED and GH-1 standards it's bad
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But 1080 from GH1 and 1080 from MKii, same lens, same focal lengths, same ISO and Shutter the MKii has a pretty heavy gangsta lean.
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I have both and for what its worth don't feel that the jello in the GH-1 is any better. I actually find the jello much more apparent in the GH-1 because it is so light. I can hand hold my 5d up to about 80mm without much shake but on my GH-1 I have a hard time going past 40mm. If I connect accessories to make the GH-1 heavier its a different story.
 
Actually it would be more accurate to say that 40mm on the GH1 would be equivilent to 20mm on the 5D Mark II, and 80mm on the 5D Mark II would be equal to 160mm on the GH1. Either way, you should have less shake with the 5D Mark II using an equivilent lens because of no focal length modifier.
 
Being incapable of handling a camera beyond a certain focal length and "camera shake" does not determine how much either exhibits a certain CMOS artifact.

It only takes locking both cameras down and shooting traffic flowing at a decent speed to see that the GH-1 handles it better in all modes. THe same thing goes when testing RED against any of the rest.

Yes, Jello shows up when the camera is locked down and shooting something fast passing the frame.
 
I agree with Kholi, thats the only reasonable way compare rolling shutter handling.
As far as CMOS chips goes the RED is way ahead on that issue, which gives me high hopes for the Scarlet.
 
I would like to add that it's also a question of getting used to the limitations of each one. It took me forever, but now I feel quite comfortable most of the times when handholding CMOS cameras.
 
alexdias said:
As far as CMOS chips goes the RED is way ahead on that issue, which gives me high hopes for the Scarlet.
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Red has been tested to be identical to the EX1, and Kholi says in his experience with all of them that the GH1 is comparable to the Red in skew terms.
 
I'll try and do the test tomorrow. With that said - all I wanted to stress when saying my experience with both is that I find it way easier to shoot handheld with the 5d. There is absolutely no comparison. There is far less jello with the 5d when I'm handheld - but that could completely be the weight of the GH1.
 
Barry_Green said:
Red has been tested to be identical to the EX1, and Kholi says in his experience with all of them that the GH1 is comparable to the Red in skew terms.
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I'm sure you are right Barry. I don't have a lot of experience with the EX-1, I did shoot a bit with the EX3 which I believe is the same as far as rolling shutter goes and some with the HPX300, the RED always seems to be more consistent managing jello.
The main reason is probably the size and weight of the RED and the way it behaves like a film camera, leading to more conservative moves and handling.
 
Which is what ryan is saying regarding the 5D vs. GH1.

However, if you handle them under identical circumstances, the GH1 will show a lot less jello than the 5D does.

The EX1/Red test was done by Jim Arthurs, he mounted an EX1 on top of the Red and shot identical panning and tilting and compared the relative skew and found them basically identical.
 
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