Here's a twist: a video FOR Rich

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MrMorden
Posts: 2184
Joined: Fri Aug 17, 2012 7:28 am
Location: Athens, GA

Re: Here's a twist: a video FOR Rich

Post by MrMorden »

drdehave wrote:I can always trace my jello back to vibration--either the camera/arm set-up used for attachment, or higher-frequency vibrations of the airplane itself, or propeller. In particular, throttle pull-back harmonics of the prop always creates jello (i.e., video wobble). And with the DUC prop I use, I get a lot of harmonics when I am throttling-back and descending, especially when over 5,000 MSL in cross or following winds. I plan for these situations and try to avoid them; and I know (and rely more on) those cameras it will have the least effect on.
Hmm...maybe that is true. I really wish some folks would come out with some really secure and vibration isolated yet removable camera mounts for airplanes.
Andy Walker
Athens, GA
Sport Pilot ASEL, LSRI
2007 Flight Design CTSW E-LSA
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drdehave
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Joined: Fri Apr 13, 2012 10:45 am
Location: Davis, CA

Re: Here's a twist: a video FOR Rich

Post by drdehave »

100_3501 (942 x 707).jpg
100_3501 (942 x 707).jpg (152.65 KiB) Viewed 2060 times
100_3511 (942 x 707).jpg
100_3511 (942 x 707).jpg (162.18 KiB) Viewed 2060 times
100_3512 (1428 x 1071).jpg
100_3512 (1428 x 1071).jpg (224.09 KiB) Viewed 2060 times
I have found that "Jello," from the airplane's high-frequency vibrations, due to prop unloading and other causes, is most prevalent when you attach your GoPros directly to the airplane using some form of a "hard" attachment, like in picture #3:

To minimize such jello, I try to use indirect, "soft" methods, such as shown in picture #2 (goes in the depression on my dash) or picture #1 (sits on the carpeted rear deck, just behind me).

Using some from of "dampening" material placed on hard mounts may thus work, too, but I haven't gone there yet. However, I am quite certain that high-frequency airplane vibrations--that you might not expect to affect the GoPros--do, in fact, dramatically affect them and result in a 'jello' response from the camera.

Rich
Sting Flight (Flying the Sting LSA)
http://www.youtube.com/user/9162069934/featured
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