The curvature isnt really visible unless you are in space, its not even noticeable from the windows of a jet airliner

You are seeing curvature in this picture for the same reason that if you took a picture on top of a disc the edge would appear rounded. It is proof that the horizon does not extend to infinity but rather drops away. There is no wide-angle trickery here.

I'm not talking about the horizon "dropping off," dipshit. The lense is causing barrel distortion, and if this isn't corrected, as it obviously isn't in the image, it will make the edges appear more rounded than they actually are. The Earth is much too large in size to make such a drastic curve without the "aid" of lense distortion. Pic related is an even more exaggerated example.

If you don't understand something, don't pretend like you do.

Dipshit. I know what you are talking about and that is not what you are seeing in this picture. You aren't seeing the earth 'bend' in this picture you are seeing the horizon curve around in a circle (because you are so far above it). If you were at ground level you see the horizon at eye level and in photographs it appears perfectly straight. (imagine holding a hula hoop at eye level) Now image holding that same hula hoop at waist level and taking a picture of it. In the first picture it looks straight. In the second picture you can see it curving around your body. There are no tricks in this picture.

Again, the Earth is much too large to have such a drastic curve. It works with a hula hoop because they're microscopic in comparison to the Earth. To get a curve to the degree of the one in the image on an object as large as a planet, you need to be much higher up.

I'm completely aware how big the earth is (physicist here). What I'm telling you is the camera is telling the truth about what it sees, there isn't any sort of effect being applied here. But even the straightest lines appear curved to our own eyes and our brains "correct" it to appear straight.

Watch this:
www.youtube.com/watch?v=Y2gTSjoEExc
at 2:50

That video literally just explains lense distortion, which is exactly what I'm talking about.

And yes, our eyes are lenses. Images are curved and corrected by the brain. A camera doesn't have this luxury by default. As you said, it is telling the truth about what it sees, which is the distortion of the lense. Now, image processing either on the camera itself or on a PC through something like Photoshop can fix this. But again, the image, by default, will have distortion.

So to recap, there is distortion on the image. There's no way to argue against this. The sheer size of the Earth makes this physically impossible for an image taken at such a height.

Ok so now that were on thesame page consider this: that same photo taken at ground level, no matter how wide-angled, would not show a curve in the horizon. His altitude, albeit small produces this effect.

>would not show a curve in the horizon
No shit. That's because the horizon would essentially be at eye level for the camera. It won't appear bowed because of this. If you move the focal point higher, the lense distortion would produce a curve. Greater heights produce a more exaggerated effect, which must be corrected.

What the hell is even your point anymore?

My point is that if the earth extended infinetly flat then the horizon would always be at eye level regardless of altitude. The fact that greater altitude produces greater distorition means that the original photo does in fact supply evidence that the horizon curves out of our field of view and therefore implying the earth is round.

Your reading comprehension is next to zero. I'm not arguing at all for a flat Earth. I stated this in my initial comment. All I'm saying is that lense distortion is a thing that is present on that image. It is not corrected and gives the impression that Earth is much smaller than it actually is due to the exaggerated curves.

I've even corrected the image for you as a visual aid because you clearly don't understand the concept of camera lense distortion.

Ok this is my last post cause i got to go to bed and im getting thumbed to hell but i did enjoy our discussion. YES im aware of the illusion! Im not saying that you would be able to see 2 very tall buildings on either side of the photo tilted relative to one another. Im saying the illusion is a product of the fact that in the original photo our view of the horizon is limited to only 20 miles or so.