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.

Next… The perspective just keeps on coming.

to be continued…

read next - It's All About Perspective
previous - Scream & Shout Field of Vision

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Remember… Just Create!

Copyright 2016 H. Simpson

If you are interested in further expanding your knowledge, then I recommend these books.

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Scream & Shout Field of Vision

Field of Vision

The human field of vision is the area of space that we can see at the same time.

Some of us are blessed with an almost 180-degree forward-facing horizontal field of vision. It is not uniform. We're not really going to be concerned with that here, as an artist can't really draw that on the printed page without resorting to trickery.

Here's what we will concern ourselves with at this time.

The normal human visual field extends to approximately 60 degrees toward the nose from the vertical center in each eye and approximately 60 degrees above and 75 below the horizontal line.

When both eyes observe an object simultaneously this creates a central field of vision which is called our binocular field. This means our binocular field is about 50 degrees to 60 degrees.

Next…. Let's apply this knowledge to drawing in perspective.

to be continued…

read next - Vertical Field of Vision
previous - The Hangover Perspective

Keep reading and follow me. If you have found this helpful, please let me know and share with other creators. Are the explanations clear and complete? Feel free to ask me questions.

Remember… Just Create!

Copyright 2016 H. Simpson

If you are interested in further expanding your knowledge, then I recommend these books.

When you purchase a book by clicking the link below, I get a piece of the action and helps me to continue doing this blog. Support an artist today.