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Oscillation - looks like POV "Stevie Wonder"

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#1 Tim Morten

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Posted 06 April 2009 - 07:53 PM

I'm a total newbie, learning how to use a Flyer LE (and I do plan to take a workshop... just getting my feet wet for now). I'm experiencing left/right oscillation in much of my footage, which makes my shots look like they are POV Stevie Wonder. It might be that I am gripping the post too strongly, but this doesn't seem like an obvious movement to be translated from my body. Maybe I need to tighten the camera to the baseplate? I don't visually notice rotational wobble there, but I suppose it's possible. Perhaps it's my dynamic balance? I haven't yet tried to get that sorted out... I (perhaps wrongly) assumed that having good static balance would be okay for starters. I suppose dynamic balance is my lead suspect, so I'll work on that... still, any input is welcome - I'd love to know I'm on the right track! For reference, I'm flying a Red One, with not much on it, so ballpark 14lbs.

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#2 Sam Morgan Moore

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Posted 07 April 2009 - 03:07 PM

Oscilations/Judders - something loose and flapping around

Pendulluming - to fast drop time - rig too bottom heavy

Any bottom heavy rig will swing a bit when you accelerate - needs to be countered with a light touch

DB will help starting and stopping pans etc

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#3 Ed Moore

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Posted 09 April 2009 - 05:20 AM

Pendulluming - to fast drop time - rig too bottom heavy

Any bottom heavy rig will swing a bit when you accelerate - needs to be countered with a light touch

Yep, although practicing with an insanely quick drop time is fantastic for committing the input needed to correct for the pendulum effect to muscle memory. One has found. :)
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#4 Brian Freesh

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Posted 09 April 2009 - 10:31 AM

If I am interpreting correctly, you are having a side to side pendulum problem, not front to back. The Stevie Wonder comparison paints the picture for me, but tell me if I'm misinterpreting. The aforementioned bottom-heaviness could be partially responsible, so could your own theory of gripping the post too tight. Doesn't sound like a problem with the camera on the plate, that would cause more of a jitter if anything. What is your drop time?

It may not be the cause, but I suspect you are gripping the post too tight because you refer to gripping it at all, which you shouldn't really be doing, but everyone does at first. You should just be touching it, lightly. The way you touch it may appear like a grip depending on your favored way of operating, but you shouldn't exert force on the post except to counteract unwanted movement. You'd be surprised how much movement you can introduce just by gripping the post. Something that helped me not grip the post was to put my hand behind my back and walk in a straight line. You'll notice the rig does it's job and stays level and straight, if it is static balanced properly.

Static balance is perfect to start with, don't worry about dynamic balance for a while. Dynamic balance is related to panning and will not be the cause of your problem unless you are doing successive quick pans back and forth, which would make me thing the Stevie Wonder POV is what you're going for! |-)~

Brian |-)~
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