| http://www.w3.org/ns/prov#value | - Using any longer lens one has to get back too far and then things such as signal lights, power lines/poles, trees and other buildings may get in the way.The problem with a wide angle is that when you are down near the bottom of a tall building and point the lens up the normally parallel lines of the sides will converge at a vanishing point in the sky (in extreme cases it can give the building a pyr
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