Why there are jerks?
- Thread starter riz
- Start date
Why not make a poor man steady cam? Less shakey shots then
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PROFIT!!!
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PROFIT!!!
If you're shooting with just your hands there will be jerks. It's practically guaranteed.
Is that lens image stabilized? It could actually be that - the IS on most DSLR lenses isn't designed for continuous movement like a dedicated video camera would be. It works great until it hits the limit of it's adjustment in one direction - then it snaps back to the center, causing a noticeable jerk in the image. It's a bit of a catch-22, because without the IS you'll get a lot of high-frequency shakiness which is amplified by the rolling shutter, but with it you can get these jerks.
It's a combination of handheld shakiness, slight rolling shutter (because of the aforementioned shakes) and a high shutter speed.
Get some stabilization for the camera, run the shutter speed at about double your frame rate and it will be much smoother.
It's also way over exposed, and the highlights going in and out rolling off the leaves ins't helping, but isn't the issue you're talking about really.
Thinking just of the inertia of the camera. I shot lots of stuff with a 16mm camera that sat on the shoulder and it's possible to be very smooth once you develop a feel for it, at least with wider lenses. It's harder once you get to about 25mm (guessing 50mm on a DSLR). A key issue is what the engineers would call the rotational inertia of the camera. How the masses are distributed decides this. A lightweight film caera that sits on your shoulder has quite a good mass distribution leading to a high rotational inertia. Meaning the masses resist any sudden change of angle. So for a DSLR if you can shift the mass to the front and back, for example shifting a battery well to the back, or just add mass, you could create a higher inertia, more steadiness.
Show your actors more respect, laddie!
Seriously though...
It looks like your footage has hangups in a few spots.
1) Are you using a fast enough memory card? Minimum (for video) is Class 6, but Class 10 cards are much faster and not much more expensive.
2) Do you notice this hangup when watching the playback on camera? Or only in your NLE? If it's just on your NLE (which one, btw?), is it always in the same spot?
