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Skateboarding => Skate Questions => Topic started by: jonnysheen on May 04, 2017, 06:01:39 AM
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Bought a Nikon and what i've filmed on my D3200 looks shaky so far, so looked into it and its called 'rolling shutter'. Mike Manzoori talks about it here
8.01 https://www.youtube.com/watch?v=d8XMxwaixY0 (https://www.youtube.com/watch?v=d8XMxwaixY0)
I have a cam caddie and a fisheye lens but its proving to be a problem of how to stop it happening.
Is using a stabilizer the only way to get rid of it?
or is it all down to technique?
Does it happen on a GH2 or VX?
(I bet there's another thread about this somewhere)
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Do you have an example of your footage?
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It would be best if you could posts some footage. But usually if you film 60p, rolling shutter is reduced a little bit. Also, upping your shutter speed helps. I usually set my shutter speed to approximately 4x the frame rate for skateboarding, I think that's the perfect balance between a crisp image and some motion blur to blend the frames. 2x is standard for other things but I find that a little too blurry for skating.
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If your footage is shaky it isn't because of "rolling shutter." It's because you are not shooting steady enough. Rolling shutter is a phenomenon where when you move a camera quickly side by side, objects (such as electrical poles, trees, etc) seem to bend and sway in the background. You said you use a cam caddie, so do I. I suggest buying a two pound velcro dumbbell to stick on the back to add a counter weight. Also, a lock out kit would help a lot.
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Thanks for the input. here's the test clips i was filming
https://youtu.be/HiY-OSk01oE
https://youtu.be/xJ9Q3zCJMlY
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Thanks for the input. here's the test clips i was filming
https://youtu.be/HiY-OSk01oE
https://youtu.be/xJ9Q3zCJMlY
What are your settings? Seems like you definitely need to up your shutter speed a bit to reduce motion blur, would help reduce the overexposure too. I don't think the key issue is rolling shutter(refer to able's explanation), but rather just motion blur(increase shutter speed) and shaky filming. Try hold your breath when you film single clips and invest in a good handle/add on weights if you can. Most of all, practice.
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A good rule of thumb is to have your shutter speed at double your frames per second when shooting movies or what ever else. So basically, if you are shooting 1080p at 30fps, then shoot at a shutter speed of 60. If you're shooting at say... 720p or 1080p at 60fps, then it's a shutter speed of 120 and so on...
The absolute lowest shutter speed you should be shooting at is 60. These are great guidelines for shooting movies/cinema etc. Since we are filming skateboarding, the actions can be much quicker than typical cinema. For that reason, sometimes I crank my shutter speed to a little MORE than twice the shutter speed. This can be particularly helpful if you plan on playing anything back in slow mo.
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Thanks Guys. I can't remember what the shutter speed was at the time. It was the first time i filmed on my Nikon so it was all hit and hope. Didn't really figure that shutter speed would cause an issue with frame rate. Its basically practice at the moment. Filmed friday night on 50fps with shutters at 200 (PAL because i'm in the UK), looks better but still not quite there yet. Shaky camera again in places, so was trying to detect whether it was my filming or shutter issues when i got back home. Can't really tell when your looking at 2x4 screen on the Nikon. It was dark so exposure was an issue.
A friend recommended this vid, found it helpful
https://www.youtube.com/watch?v=2VZMbngPFF8&t=1s (https://www.youtube.com/watch?v=2VZMbngPFF8&t=1s)
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Thanks Guys. I can't remember what the shutter speed was at the time. It was the first time i filmed on my Nikon so it was all hit and hope. Didn't really figure that shutter speed would cause an issue with frame rate. Its basically practice at the moment. Filmed friday night on 50fps with shutters at 200 (PAL because i'm in the UK), looks better but still not quite there yet. Shaky camera again in places, so was trying to detect whether it was my filming or shutter issues when i got back home. Can't really tell when your looking at 2x4 screen on the Nikon. It was dark so exposure was an issue.
A friend recommended this vid, found it helpful
https://www.youtube.com/watch?v=2VZMbngPFF8&t=1s (https://www.youtube.com/watch?v=2VZMbngPFF8&t=1s)
That video is helpful. You should keep your shutter speed consistent in every clip, adjust iso and aperture for the right exposure. If it's really dark and you're getting desperate, then down your shutter speed to 2x the frame rate. There really wasn't any noticeable rolling shutter in those two test clips you posted, was mostly just blur from slow shutter and shaky camera. It will get better with practice, try to move the camera as little as you can when filming a clip when panning.