You used the 'fisheye' lens? Or not...?


"John M. Dlugosz" wrote:
> 
> A photograph using a wide angle lens will show distortions, such that
> buildings, which are vertical, appear bent.
> 
> Yet a POV image with a very wide angle camera (a direction vector of length
> 0.4) my verticals and horizontals and depth lines are all straight.  depth
> lines converge to a vanishing point, but vertical lines stay vertical and
> parallel to each other, and horizontal lines stay straight and paralell to
> each other.
> 
> Why?
> 
> --John

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