Wikipedia talk:Featured picture candidates/Berlin Victory Column

vertical tilt

About this inquiry [1], @Sca: measurements relative to two different edges of the frame can show shift, not tilt, I wouldn't go by that. The main column is the longest structure and dominates. Any vertical tilt in it would stand out as unacceptable. The main column is a very tall trapezoid, see drawing. To check it I choose points A, B, C, D, and then if the horizontal distance between A and B is equal to the horizontal distance between C and D, I call it upright; otherwise it is tilted. The most reliable points I can find are: A=2107, 9406, B=2214, 4478, C=3049, 4464, D=3157, 9396, pixels, all relative to the top left corner of the image. The horizontal distance between A and B is 107px, between C and D is 108px, so the main column is upright (not tilted). Bammesk (talk) 14:59, 17 April 2016 (UTC) This was a vertical check, a check of 2 symmetrical points in the horizontal direction shows a tilt in some of those. However, those lengths are short, so the tilt don't stand out much. Why is there a tilt in the horizontal direction? my guess: camera is not in the perfect center of the base structure, this is a composite of 29 images, the stitching process.