Difference between revisions of "Perspective"

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[[File:pictorial_47.png | 300px]]
 
[[File:pictorial_47.png | 300px]]
  
A side view shows that all the edges of the table (below left, in green) are not parallel with each other. Yet we are inclined to draw them as such (belo right).  
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A side view shows that all the edges of the table (below left, in green) are not parallel with each other. Yet we are inclined to draw them as such (below right).  
  
[[File:pictorial_36.png | 300px]]
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[[File:pictorial_36.png | 500px]]
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===Whats the use of perspective?===
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Perspective can be used to 'force' a point of view (and thereby an emotional context) upon the viewer. The image below on the left is a perspective schematic of an adult walking into a room full of adults. On the right is the same room full of adults from the point of view of a child. 
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[[File:pictorial_40.png | 500px]]
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Or, alternately...
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[File:pictorial_44.png | 500px]]
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Feeling dizzy? A drawing by the great drawing systems artist: M. C. Echer.
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[[File:pictorial_48.png | 300px]]
  
  
===Whats the use of perspective?===
 
Perspective has two main uses: to show position
 
  
 
[[File:pictorial_37.png | 300px]]
 
[[File:pictorial_37.png | 300px]]

Revision as of 05:27, 25 January 2012

First of all,,, what is perspective? I ask the question because it is a term that is often used poorly or inaccurately. Take the image below: the trees in the distance look like they are in the distance because:

Pictorial 30.png

Far tree
Near tree
Perspective?
Atmospheric distortion No atmospheric distortion No
Is of low lightness contrast Is of high lightness contrast No
Has fuzzy edges Has sharp edges No
Is small Is large Yes

Perspective is a system of drawing. It is the only complete system that art has, good perspective now is the same as good perspective one hundred years ago and will be the same in one hundred years. This system was first formulated by 1021 Alhazen (Abū ʿAlī al-Ḥasan ibn al-Ḥasan ibn al-Haytham) and has ever since been vital to the realistic depiction of depth space within a picture plane. However, as you can see from the above table, it is not the only thing needed to do this.

Pictorial 34.png

I shall detail below some facts about perspective through an attention to the common mistakes that students make. As perspective is an entirely taught thing, these mistakes are rooted in the way that we draw as children (a.k.a.: a 'pre-taught' state). In the first of the drawings below, the front edge of the table is parallel with the edge of the paper (i.e. the horizontal) and the two sides are also paralel with each other (centre image). In the right-hand image the table has been re-drawn 'correctly'.

Pictorial 31.png

The reasons for this 'wrongness' are outlined in the following images. A common mistake is to 'lift' the surface plane up so that it presents in map view (below).

Pictorial 35.png

Map view is inherent to the 'pre-trained' childhood drawing condition.

Pictorial 47.png

A side view shows that all the edges of the table (below left, in green) are not parallel with each other. Yet we are inclined to draw them as such (below right).

Pictorial 36.png

Whats the use of perspective?

Perspective can be used to 'force' a point of view (and thereby an emotional context) upon the viewer. The image below on the left is a perspective schematic of an adult walking into a room full of adults. On the right is the same room full of adults from the point of view of a child.

Pictorial 40.png

Or, alternately...

[File:pictorial_44.png | 500px]]

Feeling dizzy? A drawing by the great drawing systems artist: M. C. Echer.

Pictorial 48.png


Pictorial 37.png

Pictorial 38.png

Pictorial 39.png

Pictorial 40.png

Pictorial 43.png

Pictorial 41.png

Pictorial 42.png

Pictorial 44.png

Pictorial 45.png