Tommy Grønvold has repeated the measurement that Rory did.
Location: 59.058238, 10.407123
There is a straight edge set close to the horizon. This controls any potential distortion due to lens distortion. Here is the image scaled to 1920×1280, click for the full size:
The difference can be seen by zooming in, however, compressing to 8% width shows the curve to to unaided eye.
You can download the original, unedited RAW image file directly from the camera: IMG_0688
- The ship on the left is the Color Magic which is 225 meters long.
- The lens is a 10-20mm wide-angle lens, not a fisheye lens.