Seeing (part 2)
In part 1 we learned how memory
takeover could cause us to distort a
drawing we were trying to make of an actual 3D scene. Next, let’s examine the way in which an
untrained person looks at the world so that we can better understand why it is
so easy for memory takeover to occur and how we can deal with it.
B. Regular old looking
The human eye has a cone of focus
of only about 6 degrees. This means that
when you fix your gaze on something, you can only focus your eyes on objects
within a range of three degrees on either side of the centerline of your visual
field ( a wedge whose horizontal diameter is only about a twentieth of your
approximately 120-degree total field of vision). Within that range, there is a very limited
depth of field for human eyesight. So,
using example_5 let’s suppose you
are looking out of your window.
As you look past the praying mantis
on the drapes you notice a squirrel stealing seed from the bird feeder in your
yard, and just beyond the squirrel, still within your sightline, is the chimney
of the house across the street, and beyond that are the distant mountain
peaks. If you move your sight line of
vision, to focus your attention on the praying mantis (it looks like it’s going
to jump on your sleeve!) (See example 5A)
you will notice that all other elements in your six degree field (squirrel,
chimney, mountains) have gone out of focus.
As you refocus on each of these 4 elements in turn (examples 5 B, C
and D ) each of the other three go out of focus. If your line of vision drifts right or left (or
up or down), you will notice that each of the aforementioned objects goes out
of focus as you zero in on something else.
Notice also that objects within our cone of focus but separated
significantly in depth are also out of focus when we hone in on one object. Yet except for the times when we’re doing
exercises like this, we never notice how much of our world is out of focus at
any one time; Nineteen twentieths to be more precise. This is because we construct, in our mind’s
eye, an in-focus universe by letting our eyes continuously dart around,
focusing on everything of importance that we encounter. This is regular old looking.
One of the dominant left--side
brain functions I mentioned earlier was stepwise logical progression. For example as a math student you would
logically progress from simple arithmetic to geometry, trigonometry, algebra,
differential equations and then calculus and beyond. As a child learning to read you would start
by learning the alphabet then progress to simple word/object associations and from
there to simple sentences, grammar and so on.
The ability to understand logical progression is obviously a valuable one
for humans but it can be an impediment when it comes to rendering an object accurately
from life (when seen in three dimensions), especially when we use regular old
looking to do it.
An example of the problems inherent
in regular old looking is in order. Let
us suppose that you are going to draw a group of objects scattered about on a
tabletop. (See example-6.)
Because of your eye’s narrow cone
of focus, you will tend to focus on each object individually, and the left side
of your brain will want to process information from one object to the next in a
logical progression. The result will be
that you draw each object in turn moving from the Basket, to the wine bottle,
and then to the file box (or in some similar fashion). But soon you will be running into trouble,
because in your drawing, the objects don’t want to line up the same way they do
on the tabletop, and some even seem to be the wrong size when compared to one
another on your paper, the spacing is all wrong and, besides that, the
cylindrical objects and boxes look distorted.
This happens because when you see and draw the objects individually
(cone of focus; regular old looking), you’re not paying attention to how they relate
to one another with respect to either size or position. This is the most common issue with learning
to draw from life: loving details applied to improperly sized and incorrectly
located pieces of the whole, whether it’s a still life, a landscape or the
human figure.
What if there was a way to get
everything properly sized and in its correct relative position before
drawing the details?
The
“logical” approach of drawing objects one after another does not work because
when you focus on each object separately, without consideration for the objects
around it, you build in errors of both size and relative position. Don’t
get me wrong, there is a logical approach, it’s just not the one based on
focusing on individual objects and drawing them piecemeal.
The reason so many beginning
drawings have these distortions is again, because as you focus in, the dominant
left-brain wants to take over the drawing, imposing your currently held mental
construct in place of what you are actually seeing and, treating each
object or part as if it were separate!
In other words, the left brain
doesn’t perceive objects, in a way that is conducive to helping you draw, until
you teach it a new logical progression.
Relationships
You
can’t see the details of any of the objects, but what you can see is their
relationships to one another (see example 10).
Using this information you can then “block in” that is, you can locate and estimate
the correct size of all the objects
Then using very light pencil lines, you can just put down estimates
of where everything is going to be positioned in the scene.
So
At this point, you could, for
example, hold up your paper and compare your light, “blocked in” sketch with
the actual scene---that’s why they invented the easel. Squint if you must, to soften the focus of the
three-dimensional scene so you can make the comparison. (see Example 11). The method of seeing everything as a first step is the reason that
experienced artists always seem to have all of the objects in their scenes in
the correct positions with the relative sizes correct. Once you have established the positions and
sizes of the objects, then proceed
to work on the individual parts just like the pros do.
A little practice seeing the three D space
flat and blocking in basic shapes will almost immediately begin to improve your
drawings.
So, adding the narrow cone of focus
stuff to step wise progression gives us “Regular old looking”, which along with
“Memory takeover” make up the two main impediments to seeing correctly. In the next installment we will look at the
ways to prevent or override the Left-brain tendency to interrupt and distort
our attempts at accurately depicting what we see.