What is this wavy interference?

[kirkdickinson]

Pretty new to Arial photography. Can anybody tell me what this wavy interference is and how I can prevent it?

Here is a short clip from some footage:

To view this content we will need your consent to set third party cookies.
For more detailed information, see our cookies page.

Accept third party cookies

I have a Phantom III Pro, below are the specifics of the file created.

General
Complete name : G:\DJI Footage\20151021\DJI_0014.MP4
Format : MPEG-4
Format profile : JVT
Codec ID : avc1
File size : 3.92 GiB
Duration : 9mn 21s
Overall bit rate mode : Variable
Overall bit rate : 59.9 Mbps
Encoded date : UTC 2015-10-21 15:48:55
Tagged date : UTC 2015-10-21 15:48:55
Comment : 0.9.138
©xyz : +40.043571-81.179363+0.000
©xsp : +0.00
©ysp : +0.00
©zsp : +0.00
©fpt : -2.90
©fyw : -65.80
©frl : +1.50
©gpt : +0.00
©gyw : -65.60
©grl : +0.00

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=8
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 9mn 21s
Bit rate mode : Variable
Bit rate : 60.0 Mbps
Width : 4 096 pixels
Height : 2 160 pixels
Display aspect ratio : 1.896
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.283
Stream size : 3.92 GiB (100%)
Title : DJI.AVC
Language : English
Encoded date : UTC 2015-10-21 15:48:55
Tagged date : UTC 2015-10-21 15:48:55
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

 

[LuvMyTJ]

The props are causing shadows from the sun on the video sensor. A small hood will fix this. Lots of stuff on the forum about it. Some like to use ND filters too, but a shade will fix it.

Here are a few links from a search here...

Light and dark banding on video in shaded areas | DJI Phantom Forum

Lines in GoPro footage | DJI Phantom Forum

Banding in video | DJI Phantom Forum

Lens protector (and lens hood) for gopro with this gimbal? | DJI Phantom Forum

Horizontal lines in video | DJI Phantom Forum

Horizontal Banding in Still Photos | DJI Phantom Forum

 

[kirkdickinson]

Thanks,

I just didn't know what the cause or termonology was so didn't even know what to search for. I have seen the filters and the hoods. I think I will order a hood. Not sure about the filter though?

I have heard about Jello effect, but I didn't think this was it.

Thanks,

Kirk

 

[LuvMyTJ]

Jello is where it's all wavy.

There are downloadable printouts for a hood. I used some black thin flexible plastic like a folder for papers would be made from.

There is this unique version LINK --> #48

Here are a couple of printed versions or just cut one out of something dark and attach it.

GoPro Hero3 Sunshade lens protector. | DJI Phantom Forum

GoPro 3 Lens Hood | DJI Phantom Forum

Or even this creative one --> #19

 

[kirkdickinson]

Thanks. I have ordered one from Ebay and a ND filter that is adjustable. I will print that until the paid one comes.

Thanks,

Kirk

 

[LuvMyTJ]

Keep in mind, putting additional weight on the camera is not recommended.
I suggest you add counter balance so you don't cause undo stress on the gimbal motors. I used stick on wheel weights.

 

[badbeerbreath]

I tried a lens hood but it would touch the ground surface when powering up. I could push it in a bit further so as it wouldn't touch the ground, but then it didn't extend past the lens to do any good. Any way around this or what's everyone doing about that??