Video Clips

[M Towsley]

Re: Video Clips

Is that a GoPro, Andrew?

[baldeagle27]

Re: Video Clips

I'm using 1080-30 with medium FOV, and 8 mp.
Here's one from last weekend:

https://www.youtube.com/watch?v=p2Ujs1n7GiM&feature=c4-overview&list=UUWb5Y5B_JfGQwLJi6Vc-Q4w

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[M Towsley]

Re: Video Clips

Rob Lees,

What video resolution are you using? Anyone else using a GoPro please feel free to chime in. Thanks!!!!

[baldeagle27]

Re: Video Clips

Rob, if you look at the link in my post #40 you'll see that that's basically what I've got, I just paid them 12 dollars to cut the disc. It is convex however so fits well in the housing. Also, it's listed as a 10% filter (transmittance, or light allowed through), while according to the chart on Wiki yours is a 6.25%, which would be darker, http://en.wikipedia.org/wiki/Neutral_density_filter . So maybe doubling them up would do the trick after all-
I've tried to find ND film at the local camera supply places but nobody has it, so ordered the disc on Amazon.



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[Robert Lees]

Re: Video Clips

Andrew:

The product I use is #299 from Lee Filters. Spec in the link says it's a 4 stop filter, a 1.2 ND filter (I don't know if this means 20% reduction).

I've used my GoPro2 for several flights now, and to reduce the prop effects I use a filter inside the case to "fool" the shutter.

I purchased a couple of square feet of flat ND filter (as used in the film lighting industry) and using a large diameter hole punch, punched out flat discs to fit inside my GoPro housing.

Even with wrinkles when inserted, you can't see the difference, but it reduces those horrible prop effects.

Here's the tools you need:

1. A roll of ND filter



2. A wooden board



3. A hammer of the necessary weight and a hole punch of the necessary diameter.



Here's the method:


4. Hit the hole punch with the hammer over the wooden board...don't forget to put the ND film between the hole punch & the board.


5. Remove the nice ND filter disc.





6. Insert it, wrinkles & all, into your GoPro 1 or 2 housing.

Here's my GoPro2 case before & after putting in the film.





Job done.

Rob

[baldeagle27]

Re: Video Clips

The filters will handle the prop effect, if you get the right ones. There seem to be some aftermarket ones for the Hero 3, but i have a Hero 2, so not as much choice. Here's an option for the Hero 2, for another $100 though-

http://vimeo.com/22302989

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[AKbrew]

Re: Video Clips

Hey Gang...thought I would chime in. I am a big fan of the Pedco Ultra-Clamp for mounting your camera anywhere on the plane. I have placed it in all sorts of places with no problems. It is inexpensive and available on Amazon.

http://www.amazon.com/s/?ie=UTF8&keywords=pedco+ultra+clamp&tag=googhydr-20&index=aps&hvadid=6842485271&hvpos=1t1&hvexid=&hvnetw=g&hvrand=21175988072000670498&hvpone=&hvptwo=&hvqmt=b&hvdev=c&ref=pd_sl_2hh1y2w5vk_b

As far as the "prop effect"...we're kind of stuck with it with the "rolling shutter". There are cameras that have a different imaging system (AVCHD) that eliminates the effect, but they are much more expensive. I agree with the suggestion of mounting the camera away from the view of the prop. Here are a couple of examples:

http://www.youtube.com/watch?v=b1aRk...brzhuofot8Ylxg

http://www.youtube.com/watch?v=BtfIK...brzhuofot8Ylxg

Keep filming and posting...It's the next best thing to going for a flight!

[baldeagle27]

Re: Video Clips

Rob, the RageCam filter is listed as an ND filter, but I notice that it says "10% Filter", so I think it may just not be dark enough. Don't suppose you know what per cent filter is the stuff you're using?

Apparently the trick is to just fool the camera into using a slower shutter speed to blur the prop by lowering the amount of light getting to the lense. Here's a still photo of my dad's Tiger Moth that I did with the same camera, under an overcast sky:



Note the prop is just blurred, and not wavy like it shows up as in bright sunlight (no filter on in that photo)



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[Robert Lees]

Re: Video Clips

Delete

[Robert Lees]

Re: Video Clips

Here is the same flight a few minutes later with a ND filter on the same camera, still only one minute long:

[Robert Lees]

Re: Video Clips

.... the same as what Rob was using....

Andrew: I use cheap ND (Neutral Density) filter material; it works a charm to stop wavy prop.

Here's the problem without a ND filter (1 minute video):

[baldeagle27]

Re: Video Clips

Another note, I bought one of these, advertised to help stop wavy prop, and it hardly made any difference at all

http://www.amazon.com/RageCams-Polarized-Lens-Filter-GoPro/dp/B009E8CSNG/ref=pd_rhf_cr_p_t_1_JM32

I thought it would be the same as what Rob was using, but apparently not. Maybe I need to stack two of them.



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[Free2air]

Re: Video Clips

I have been using a Contour Roam mounted to the forward strut with a flex strap. Works great!

http://contour.com/stories/glassy-water-landing-awesome--2

[N74DV]

Re: Video Clips

Here's a clip from mine. For a short while I manufactured and sold the camera mount. It had 3 axis (pan/tilt/roll) and was electronically stabilized. Mounted to the jury strut.

https://vimeo.com/3076024

[baldeagle27]

Re: Video Clips

Not Taylorcraft, but I was playing with my new GoPro on Friday, https://www.youtube.com/watch?v=ywOv...Vc-Q4w&index=1 , using the head mount. Need to angle it down a little, but the footage was OK-



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