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Vertical displacement (footage uploaded) help please !!!!


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#1 nelson o reis

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Posted 10 January 2017 - 08:31 PM

So today I took my friends son to capture  some footage to upload  so I can show you guys how I operate and maybe you guys can help with the answer  to my biggest downfall in operating or so I think ...

I know the footage  lacks some horizons and framing is a bit off cause I was mostly paying attention to the vertical  displacement  a.k.a footsteps.

I've searched in here for the answer for this problem and I've tried a bunch of things  like loosen  the springs etc but its always there  . Especially when the lense is in between  2 static  places .

I did the tip toe test and I guess it failed as I lift  the sled also lifts . I know what the problem is but don't know how to correct it .

At this point  I'm not sure if I have a failure  in the arm or is just practice  practice practice...

my question  is if the arm fails the tip toe test what can I do ?

Technical  info on the shot .


Steadicam  zephr
Bmpc4k setup ( 10lb )
Arm Springs  with low tension
Drop time 3 secs
Fairly  balanced on static  and dynamic

Also the shot was improvised the first  digger was real  the second one  was on purpose .😉

I know some of you will tell me to take a workshop but unfortunately  in my area ( Boston MA) it's very difficult  to come by .

I would appreciate  any feedback that you have and please be harsh ... it's the  point of me  going out today to capture this footage..

Thank you in advance :)


 
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#2 RobVanGelder

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Posted 11 January 2017 - 12:53 AM

There are some things to improve, like headroom and level and more acute operating when he passes by the camera, but otherwise not so bad. If you feel that you see to much up-down movement, that often comes from a too tight grip on the rig, maybe in combination with a slightly forward falling rig which forces you to hold on and correct with every step. Try to loosen your grip on the gimbal, use the other hand to gently lift or push down. And walk as if you have a coin between your buttocks... keep it tight and stable in that area, is my experience.
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#3 Brenton Lee

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Posted 11 January 2017 - 07:31 AM

I can't give you any advice as I'm a total newbie myself but thats a cool little scene and aside from seeming a bit crooked for a second here and there I liked it.


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#4 Lisa Sene

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Posted 11 January 2017 - 09:02 AM

Hi Nelson,

 

I'm in the Boston area and can teach you some basics - I sent you a PM. 

 

Lisa


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#5 Chris Van Campen

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Posted 12 January 2017 - 01:30 PM

Try adding a weight plate up top. The Zephyr arm is going to fly a lot better if you've got it loaded up.

 

Doesn't have to be maxed or anything, but up in the top 1/3 of its capacity seems to work for me.

 

If you haven't yet picked up the Operator's Manual, it's a great instructive read:

https://www.amazon.c...rators handbook

 

Good luck!


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#6 James Davis

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Posted 30 January 2017 - 07:47 AM

So the first thing I noticed more than anything is it looks like the rig isn't in static balance, as you seem to be continually fighting the rig to attempt to level the horizon and it never once settles into a level position and continually seems to go off level in the same direction.

The next thing is you are definitely gripping the rig too tight with your operating hand, way too tight, this will introduce a pendulum effect as you walk because you grip is too tight to correct for inertia related forces that throw the rig off level on the tilt axis.

Some great suggestions here from everyone else, but yourself the operators handbook, add a little bit of extra weight and length to the build of possible to give it a bit more inertia a heavy on-board battery and a matte box can work wonders.

But more importantly I would suggest going back to basics and reviewing your technique against what's suggested in the handbook, make sure the rig is balanced correctly so that when you are standing with good posture you should be able to remove both hands and float the rig in its default operating position, you shouldn't have to force it into position with your hands, a faster drop time often helps when learning operating technique initially with lighter rigs, something around 1.5-2 seconds.
Make sure your grip is correct etc etc....
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