Has Anyone Come Across This?

Drone Mastery · May 16, 2015

When I reach 360' distortion of crop lines become apparent. This is a unedited version, just wanted to get input of other pilots that might have come across this problem.It was shot at 1080 30fps..

Soflms · May 16, 2015

I havent noticed this yet, but I guess I dont really go that high...I have a lot of fields in the background when i'm doing towers, but usually around 200' as most monopoles are. I definitely see what you're talking about but not sure if a setting could fix it...I'm sure someone else will know on here

m00se · May 16, 2015

off topic, but still...... out of interest, is that video of any use to the tower companies? surely its not detailed enough to be of use? I only ask because I am looking for new ways to move the inspire, and assumed the video was completely useless for an inspection.

I assume your video is for something other than inspection.

Drone Mastery · May 16, 2015

Hey m00se....This video was just a the first flight of when i received the Inspire, It's basically useless, not smooth, didn't change the tilt settings, ect... Just trying to get used to the controller functions. These are basically neighbors and I just wanted to see what kind of video can be produced. It would have been relatively easy to get close and stable footage of a particular component of this wind tower however I wasn't feeling comfortable with the new bird yet..

I do know the power company here is looking into utilizing drones to check power grid lines instead of the copters...

m00se · May 16, 2015

http://www.microdrones.com/en/news/detail/tuev-nord-wind-turbine-in-focus-of-md4-1000/

take a look at that...... from what I understand, that is what companies are looking for..............

and the inspire cant even dream of doing it.

douglas · May 16, 2015

How did you get permission to fly so close?

m00se · May 16, 2015

It wasnt me who made the flight. I assume permissions were granted. and the generator was stopped.

But its more about the camera used,

Drone Mastery · May 16, 2015

We do work for the company that builds these wind towers, and they also use this footage at there corp. events.... I wish it was better though....

douglas · May 16, 2015

m00se said:
It wasnt me who made the flight. I assume permissions were granted. and the generator was stopped.

But its more about the camera used,

Thanks for your reply. Yep, an official inspection would come with the proper permissions.

I was actually wondering about the OP's flight/video (and sorry for the off topic question.)

douglas · May 16, 2015

Drone Mastery said:
We do work for the company that builds these wind towers, and they also use this footage at there corp. events.... I wish it was better though....

Ah, got it. Thanks!

Paul K · May 16, 2015

Drone Mastery said:
When I reach 360' distortion of crop lines become apparent. This is a unedited version, just wanted to get input of other pilots that might have come across this problem.It was shot at 1080 30fps..

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This effect is called "moire' it happens when light and dark lines or other patterns are too close together ; the sharpness of the lens or camera software preset plays big part in this . The most DSLR cameras are equipped with so called low pass filter ,which will unsharp the image just a bit before the image hits the sensor.
I would say to do another test and set the sharpness to minus setting .

Drone Mastery · May 16, 2015

Thanks for your advice and explanation Paul, I will try that....

Paul K · May 16, 2015

Drone Mastery said:
Thanks for your advice and explanation Paul, I will try that....

Your welcome.
Moire' is little bit complex to explain , because the frequencies are involved in this as well.
My expertise is in still photography ,the videography not so much. If I remember correctly in Nikon series cameras the D800 was the first camera made with and without LOW PASS filter; the one without LP filter was ,or is popular by wedding photographers ,because it can deliver were sharp images ( only problem was with dreses with fine stripes ,but that could be managed by masking in editing).
I thing in videography it isn't such a big deal to see little bit of this effect here and there; in some documentaries on TV (like" Magnifica Italia" etc.) you can spot it there as well.
Try to unsharp in camera first (very little) and second test try to unsharp in editing and compare what will work better

Drone Mastery · May 17, 2015

Paul K said:
Your welcome.
Moire' is little bit complex to explain , because the frequencies are involved in this as well.
My expertise is in still photography ,the videography not so much. If I remember correctly in Nikon series cameras the D800 was the first camera made with and without LOW PASS filter; the one without LP filter was ,or is popular by wedding photographers ,because it can deliver were sharp images ( only problem was with dreses with fine stripes ,but that could be managed by masking in editing).
I thing in videography it isn't such a big deal to see little bit of this effect her and there; in some documentaries on TV (like" Magnifica Italia" etc.) you can spot it there as well.
Try to unsharp in camera first (very little) and second test try to unsharp in editing and compare what will work better

Paul K,
Went out yesterday and tested at the same place and I just turned it down to -1 and it solved the problem completely, You are the man...... Thank you again for the advice.