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17
Successful Amateur Rocket Launch 56mile/90km above earth with camera attached. Note at 1:44 GoPro OEM lens is replaced w/t rectilinear lens, therefore no fish-eye distortion. Note also horizon begins as straight but distinct curve develops as the rocket gets higher. (youtu.be)
posted 2 years ago by clemaneuverers 2 years ago by clemaneuverers +21 / -4
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– Allas8 0 points 2 years ago +1 / -1

I just find it funny that it starts flipping at 220.000 feet, then goes for another 70.000 feet, making it all the way up to 290.000 feet.

If anyone is interested in seeing how the fish eye effect can be removed by special editing software in post production, here is a link to how it was done 3 years ago.

https://youtu.be/zppIg8jp9aA

Edit: Original link.

https://youtu.be/bMFOtW-FagA

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– clemaneuverers [S] 1 point 2 years ago +2 / -1

I'm sure you've noticed, given your keen observational skills, that the edited footage in the second half of the video has a stretched, more pixelated look to the original and has greatly increased linear jitters.

I think we must question the degree to which this youtuber (or whoever he stole the footage from) has "corrected" the image. How did he decide how much distortion to "remove" or "correct"? He gives zero details. How much fish eye effect was present in the original film? Does he know what exact type of lens was used? Was it a careful calculation to compensate for the exact amount of distortion in the lens...?

Or did he just keep going till the horizon looked flat?

My guess is it's the latter, especially given all the Flat Earth links he lists in the description, where he really should have detailed his calculations.

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– Allas8 -1 points 2 years ago +1 / -2

Right. Here is the original video of how we can remove the Fisheye Camera effect that is seen in 99% of all Space Agency footage.

https://youtu.be/bMFOtW-FagA

Actually 6 years old, from 2017.

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– clemaneuverers [S] 2 points 2 years ago +2 / -0

Wrong. The information in the description is exactly the same. He doesn't demonstrate that he knew the measurements of the "fish-eye" lens that he is "correcting" to look like "35mm", nor does he demonstrate that such "corrections" better reflect reality and do not result in further distortion, which given the state of the footage in the 2nd half of the video, they clearly seem to.

Furthermore, the "35mm" number refers to film negative, not a camera lens measurement:

https://en.wikipedia.org/wiki/135_film

A camera that takes 35mm film can often use different lenses of a variety of sizes and types. Including, indeed, a fish eye lens, ironically enough.

It's funny that, as a filmmaker (as he describes himself) he is not aware of such things.

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– Allas8 -1 points 2 years ago +1 / -2

He stats this in a comment in the video, if it is of any help.

Any good video editing software can remove the fisheye. I use Adobe After Effects for film editing and what was used for this video. Gopro's own Software now provides a tool to remove the fisheye effect. So anyone can do this.

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