Hi, my name is Dekel and when i fly the PT2 with the H3-3d and the Gopro Hero 4 black with ND filter, i can see a small amount of jitter in the video. what i can do to remove this jitter?

Process of elimination.   Visually inspect all vibration dampeners. Replace if bad.   Then remove props. With the phantom powered off spin each motor and listen for any noise.   Clicking.Loseness,or just debri in the motor bell itself.   Check each and every fastener.  Tighten if loose.     

Balance props.
Connect to P2 assistant program.   Place the bird on a level surface.(Critical)     Perform IMU calibrations.  All of them.
After that connect remote control to RC assistant.  Calibrate remote.   
After that,reconnect quad to P2 assistant.  Calibrate quad.
after that. Find a place without metal or magnets,(Empty Pockets Of Cell Phone,Keys,Change),  I think you catch my drift.  No metal at all near quad.
Then do compass calibration.
Hope that helps. Good luck man     

did a quick google on tis

Found this page

http://www.amazon.com/DJI-CP-ZM- ... antom/dp/B00JAY4CZ6

Notice the bit that says " Camera add-ons such as filters or housings will throw off the balance and could damage the gimbal"

not sure who wrote it but it sounds like he knows what he is talking about

Michael Starley Posted at 2015-5-26 05:48
Process of elimination.   Visually inspect all vibration dampeners. Replace if bad.   Then remove pr ...

I'll try that, thanks i'll update if it work or not.