Originally posted by @wolfgang59
You need to be way further out.
Take a tennis ball and move it right up close to your eye.
You can't deduce it's spherical.
You have trouble describing what you see as circular!
Even with a fish-eye lens I think the ISS "sees" less than 10% of the Earth surface
(NOT anywhere near 50% )
That is why we get these contradictory images which the fat-earthers pick up on.
They use the argument the use of wide angle lens is deliberate to exaggerate the curve of Earth which would be much less if the lens had the same acceptance angle as human eyes.
That is part of the "NASA ALWAYS LIES" card they pull out for such images.
There was one of the whole of Antarctica taken from a probe over a million miles from Earth and the entire planet was shown curved with all of Antarctica in one image.
"OBVIOUS photoshopped' was the hue and cry when the moon got in between the camera and Earth, it passed by because of the angle and speed of the craft, the moon had images of it crossing Earth but the image update was nowhere near video standard, like 30 frames/second, because of the technology of the camera and onboard computer, only took images like every 5 or 10 seconds so the moon looked like it jumped from one frame to another but Flatasssers could not accept that explanation, instead pulling the 'NASA ALWAYS LIES, IT'S PHOTOSHOPPED" card and no amount of explanations as to the tech behind the images would change their totally closed minds.