Monday, March 25, 2013

Vertical Field of Vision


Let's look at how the vertical field of vision is important to the visibility of an object.

There is a point from which an object becomes an indistinct line on the horizon. That is the point at which the vertical size of an object diminishes to an imperceptible sliver within the vertical field of vision.

The illustration below shows how the visibility of a long horizontal object is determined by its height and not by its width.

As a person moves farther away from a horizontal object the width may still be
apparent, however the vertical dimension is reduced to almost invisibility.

It becomes difficult to separate the object from the horizontal line.


vertical field of vision


Next… The perspective just keeps on coming.

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Copyright 2016 H. Simpson

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