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revbayes — Art and Focus - An Editorial

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Published: 2016-03-16 00:51:27 +0000 UTC; Views: 5913; Favourites: 24; Downloads: 245
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Description The following is my own opinion and something you're not likely going to find at an art school. Feel free to publicly disagree with me in this thread, but if you do, please present argument and evidence rather than simply calling it B.S., and be prepared to defend your position.
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Do you ever think about what light is and about how we see? As an artist or illustrator you should. Even modern and post modern art is concerned with how works are perceived by their audience. How much more so then should we who create "representational, visual art" strive to understand how it is we see.
 
As people who grew up in the "modern world" (post 19th century) we do have one advantage that people from earlier times did not: Scientific Understanding. While science hasn't quite yet figured out the last links in perception, physics can tell us that for all practical purposes light is a particle (photon)...a particle that leaves it's source and travels in a straight line till it hits something, where it's either absorbed, transmitted or reflected. If it's lucky enough, it (along with it's countless brothers) hits our eye(s). Biology then tells us that our eyes are machines that consist of a lens, an aperture and an interface that turns light particles into bio-electrical signals that travel along the optic nerve to the brain. What happens there, no one is quite sure...yet, but the brain somehow turns those signals into representations that allow us to understand the world around us.

If, as artists, we don't understand the process of seeing, we're bound to make mistakes and wrong assumptions. Before the 20th century, the best guess was that light either was, or traveled as waves through, a medium called "ether". As those waves struck an object they caused the object to become illuminated. This idea sent the impressionists on what I call, "a mad quest" to capture light as it traveled through the ether...something that we know doesn't actually happen.

Until the advent of the camera, artists really didn't have a very good idea of how the eyeball functioned, either. It's easy for us to say that as we look at something, muscles pull the cornea into shape to cause what we're looking at to come into focus, and how, because of that, everything we're not looking at goes out of focus.

Focus: that's the point of this editorial.

Suppose you're a 16th century painter in his studio. You've sketched out all the elements you want onto your canvas and now you are ready to paint. One of the elements is a chair that's in your studio. You look at that chair, and paint it onto the canvas. Another element is a table. You look at it and paint it also. A broom in the corner...a potted plant...a piece bit of drapery...all these things you look at and paint. Your brushstrokes are good. You have an eye for detail and can accurately paint anything you see. Yet when you're finished, something is wrong.

Focus.

Everything you've painted...you've been looking at. Each element was in perfect focus while you painted it, and that's the way you painted it. Because you don't know how the eyeball works, you don't realize that when you look at something, the rest of the world is a blur, and the further something is from what you're looking at, the blurrier it becomes. All you know is that the chief element of the picture doesn't stand out from the rest and the whole painting looks confused and cluttered.
 
Focus. You don't know about it, but you do know about color and contrast. So you tell yourself that the main element needs to be brighter and the area behind it needs to be darker...or is it the other way round? Maybe the element needs to be one pallet of colors and the area behind it a contrasting pallet?

Welcome to the world of painting as it was practiced from the 15th century to the middle of the 19th. A whole world of tricks were developed to deal with one problem: Focus. Only, all the tricks were wrong, because no one knew how eyes focused, and everyone thought it was a problem of light. All the careful composition and lighting, all the contrasting coloring, all the washes with thinner to make the background fade out...they were all wonderful, and clever, and treasured...and all completely wrong. (perfect example is Rembrant's "The Anatomy Lesson" upload.wikimedia.org/wikipedia… Where is all the light coming from to make their faces so bright? Isn't it nice they all wear dark clothing to contrast with their heads?  Someone should tell them that their back wall is fading away. Is that corps actually glowing?)

By the middle of the 19th century, artist realized the tricks weren't working. The first to rebel were the Pre-Raphaelite Brotherhood, who's motto, "True (or truth) to nature" simple meant discarding the bag of tricks and going back to painting what they saw...with predictable results. (see: John Everett Millais's "Christ in the House of His Parents" upload.wikimedia.org/wikipedia… The same flatness. The same cluttered feeling. Everything is so equally in focus that the sheep in the background are just as sharp as the boy Jesus in the foreground.)

Another school of painting to tackle the problem of focus was that of 19th century naturalism. Their solution was to paint the center of focus in great detail (like the academic painters who came before them) while painting everything else with broad, quick, simple strokes. (like the impressionists who came after them) This technique achieved a sort of "poor man's blur". (see Julien Dupre's "Glaneuses" upload.wikimedia.org/wikipedia… Look at the detail of the two women in front compared to the boy in the background or the huts in the distance.) Ultimately, 19th century naturalism with it's "pseudo focus" failed to garner the support it needed to become dominant, and after that came impressionism...and everyone just gave up.

So...what does all this have to do with us? Well, we have all the knowledge they didn't and we have computers! 3D renderers all have controls that can mimic actual camera functions. Photo editing software allows for all sorts of blurring. We can accomplish in our art what they never could .

But do we want to? We still have all the tricks the masters left to us. We can still use them if we want. All we have to do is...

Focus.

-Stephen Turk, (March 15th, 2016)
Related content
Comments: 8

nomansland1 [2016-10-18 04:22:06 +0000 UTC]

You put a lot of thought into your work's elements! It's a joy to read. And I can't help but chuckle as every "related work" in the "more on DeviantArt" section is filled with 6-armed anime girl models right now.

Ah anime, a case study of how far "style appeal" can stretch one's definition of "quality".

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jarvik2009 [2016-06-06 21:57:12 +0000 UTC]

I know nothing about this other than I prefer image number three. It appears brighter and sharper and the patterns and creases in her catsuit are more pronounced. Perhaps its slightly hyper realistic but its more compelling to me.

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EKrayon [2016-03-19 23:56:15 +0000 UTC]

Ok...clearly you have given your subject a great deal of thought, and you just as clearly have have done a large amount of study (instruction as well?) on the concept of lighting in art.
   Conversely, I am completely self taught in the art department (have read a shite load of books), but more importantly the lion's share of my artistic pursuits have been black and white illustrations.  So, I am coming at your topic from a different direction,  and while I understand (I think) the points you were making (and was intrigued by them as they were new to me), I would offer this alternative idea as possibly of equal (importance?)--perspective.  True perspective (vanishing points, grids, etc) obey a set of rules (with some math at the heart)  that range from simple to fairly complex.  And most successful artists sort of wing it--but it is after they have absorbed the basic tenets.    What might ensue if those basic tenets are never learned?
    I offer these observations as evidence:  if you watch young children attempt to draw, you note right away that everything is flat, they have no formal notion of perspective at all.  I tried teaching my nephew at a young age simple one point perspective (the classic train tracks to the horizon).  When I asked him to draw a box, he could not do it.
     Second;  I attempted to teach a bunch of Boy Scouts how to draw a head in a box, again with simple one point perspective;  none of them got it.
     I've had many a discussion with adults about illustration, where I adamantly assure them anyone can learn to draw, if you approach it as a skill and LEARN SOME BASICS.
    Those that tried, failed and gave up--as almost all do.  Why?  They can't grasp HOW to do perspective.  There are mature reasoning beings, and they SEE perspective all around them in the natural world, but they simply do not know how to translate that to flat illustration. (Digression:  I have believed for years that is why almost everyone gives up trying to draw after childhood; they hit the frustration wall in trying to translate what they obviously see around them to a 2 dimensional medium).
    Lets be honest; the greatest painting on earth is still a cheat--its a 2D representation of a 3D object.  So, if your medieval artists, in their dogged pursuit of the capture of light did not truly understand the rules of perspective, then they had no chance to attain the  "focus" they were striving for.
     Now clearly, the idea of perspective existed even back then (Da Vinci, etc), but I think they may have had the same problem in not really understanding that there were rules and how they applied.  As you pointed out, what they were good at was observation, and I suspect they preferred going "with their gut", and when something did not look right, started coming up with all the tricks you alluded to try and fix things.
    So, was it the lack of understanding of how the eye focuses on objects, or the inability  to translate real world perspective to a canvas?  Truthfully, I suspect both played roles.
   SMS

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revbayes In reply to EKrayon [2016-03-20 07:33:56 +0000 UTC]

I'll try to keep this reply from being too long.

Perspective is, indeed, very important. However, it is primarily a drawing problem as opposed to a painting problem. Also, even if we discount what the ancient Greeks and Romans knew, there is still ample evidence that perspective was understood and applied to art before the beginning of the 16th century.

see:

www.youtube.com/watch?v=bkNMM8…
www.youtube.com/watch?v=YU5khz…
www.dartmouth.edu/~matc/math5.…

Take a look at early 18th century painter, Jean Raoux's "Pygmalion":

upload.wikimedia.org/wikipedia…

It is a beautiful painting that captures the seminal point in the early part of the story. However, as a work it is flawed.

Now...he demonstrates specific converging lines that lead to the back of the studio where two other are artist are working on there own sculpture. The perspective doesn't look like it's the problem. In fact, as you look at it, the perspective seems right. So, what's the problem?

Focus...

If you look at the two figures in the background, they are painted with the same clarity as the foreground figures. In fact, everything in the painting is in perfect focus. So what does Raoux do? He uses the same bag of tricks that painters had been using for over 200 years.

1. He mutes the colors in the background. (everything beyond the 1st arch)
2. He casts lighter elements over darker backgrounds (i.e., Aphrodite reclines on a dark grey cloud rather than a white, fluffy cloud)
3. He colors Pygmalion's robes (orange) in contrast to the background behind them (green)
4. He bends the rules of shading in order to get each element properly lit.
5. He tortures the rules of shadow...deliberately...in order to create, "lines of force" that lead the viewer directly to different elements. (i.e., The shadows from the pedestal and from Pygmalion create lines that converge at the baby playing with the pearl necklace...pretty cool, actually)

So...perspective was figured out long ago, but focus still remained a problem.

However, I DO see where you are coming from. To be honest, I think perspective (in art) is less well understood now than it was 200 years ago. For that, I blame two things: art schools and cameras.

For a 100 years now, art schools have denigrated traditional "representative" art in favor of "abstract, social/political" statements. They haven't done due diligence in traditional techniques.

What about cameras?  Well, the eye is similar to a camera in that it has a lens and an aperture, however, the eye's focal length is fixed at about 50 to 55mm. A real camera can have many focal lengths...each one giving a different perspective than the others. Before cameras, artists used the perspective of their eyes...that's all they knew. Since cameras have come out almost everyone has seen images or movies or video that has "unnatural" perspective. It warps what we think of as normal for images. For those using 3D rendering programs, it doesn't help that every one uses camera methodology...especially when the defaults on most of the programs are set to 35mm. (I don't know why they do this...perhaps the software engineers are confusing focal length and film size, which was 35mm by default)

OK...I said I was going to keep this short. I failed.
Better end here.

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EKrayon In reply to revbayes [2016-03-25 23:33:42 +0000 UTC]

Ah, clearly this discussion would be so much better served if it continued over several cold beers, but since that is unlikely to happen...
  Please be assured I was at no point disagreeing with your theory (as stated, I bow to your clearly superior knowledge about all this coloring stuff).   My comment on the perspective factor was more in the line of musing along the lines of "what if it was not as simple as they did not understand "focal length".
    When you stop and think about it, they must have at least understood some aspect of it, even if they could not actually formalize it.  As men of their time, the one thing they had to be good at was --observation.  As such, they would have had to notice--by observation--that natural things clearly got blurrier to the naked eye the further away they were ( or partially obscured by smoke or mist or what have you).
     Lacking a formal theory to describe that effect--and in search of the secret of light in the "ether" as a wrong way path--I'm thinking they worked with what they had to try and experimentally (by trial and error) solve the problem.
     But another thought occurs to me as well--one of a socio-political nature (rather than a technical one.)  These guys were working artists in an age where they were doing it for a living.  Which would have meant they didn't get paid until the painting was done. Which also would have lent itself to taking whatever shortcuts were feasible to expedite the process (like cheating on the perspective for instance, or ignoring it--I didn't forget my own point).
     But there may be an even more insidious agent.  My (limited) understanding of the time frame would have meant that to achieve "professional" status a journeyman system existed.  Preferably, you would want to apprentice with a master artist of some renown (so you could garner some fame by association).  But that would have meant studying with that master artist, and learning how he painted.  I have to believe the conditions and situation would have been such that it would have been really bad form to question the master, or tell him he was "doing it wrong".
   So,  if the budding artists of the time noted that things were not quite right, they most likely would not have tried rocking the boat by questioning the prevalent thoughts of "solutions to the problem" with the in vogue stylistic painting schools.  And by the time they could go off and get their own apprentices  they were subsumed in the system and would only perpetuate it.
      I think that is enough crazy-eddie speculation on my part. 
    What else can we talk about.. their fascination with painting chunky women..(hhok)...
 SMS
     

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revbayes In reply to revbayes [2016-03-21 03:43:36 +0000 UTC]

One last thing...

While the geometry of artistic perspective allows us to create a grid that keeps the perspective consistent within the drawing, there's no hard and fast rule that ensures correct focal length (depth) within the picture. Fewer grid squares to the vanishing point = a shorter focal length, while more grid squares equal a longer focal length...but where is your reference? How many grid squares in any particular picture = the 50-55 mm focal length of the human eye? It winds up being a guess. Just a matter of, "what looks right"...at least to the artist. Most artists who, "get it wrong" simply misjudge the number of squares to the vanishing point.

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revbayes In reply to revbayes [2016-03-21 05:11:05 +0000 UTC]

Actually...a couple more last things.

The picture illustrates the problems using vanishing point perspective. Is that really a 120mm focal length, or are you just bending low to the ground? 20mm, or flying high?

revbayes.deviantart.com/art/Gr…

Lastly...(really, I mean it!) geometrically, the number of grid lines becomes infinite as they reach the vanishing point. That means the grid method is only viable for objects that are fairly close to the viewer. All distant objects are treated as if they are projected on a flat plain.

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Lawsonwelles [2016-03-16 01:43:00 +0000 UTC]

Nice job! The text is great too!

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