railfan87 wrote:well the north, east, west and south views are almost never taken at the same time for some reason.
because the plane is moving, they keep the camera stationary and fire off a bunch of shots in a line..a whole string of "norths"..then circle the plane back, do a long string of "souths", perhaps many miles long..then all the easts,
then west, etc..
keeps everything in a nice even line, and photos overlap neatly.
as opposed to spinning the camera in a circle to take N-S-E-W then another N-S-E-W, while the plane is moving forward...all your "Norths" might not line up as well that way..
actually..if you think about, the "spinning camera" could be used for North and South at the same time (while the plane is flying East-West)
or a long string of East sand Wests could be taken at the same time, while the plane is flying North-South...but it would be impossible to do NSEW-NSEW-NSEW is sequence.
Scot