Sunday, October 16, 2011

Using Dark and Light 1

Illness in the family is keeping me busy, so this will be quick.

I saw this photo in the Economist magazine.


It reminded me that I should throw out some examples that use dark and light to define an object.  You might think that a blue industrial building against a blue sky would yield a building that "melts" into the background.  It can, but does not have to.  The sky has an amazing amount of variation, even if it is cloudless.  Try taking a series of photographs of a clear blue sky, pointing in all directions including straight up.  When you compare the photos side by side, you will notice a lighter horizon area, and also a lightening toward the area near the sun.  This is not new or earthshaking, but is good to know if you are illustrating architecture.

So, if you are interested in making a building stand out you can simply reverse the grading of light to dark so as to make it contrast with the background.  Again, simple and obvious, but all too often overlooked.


This pastel shows the same trick, except that (being an aerial view) it uses the light sky and darkish city streets as the foil for the tower's reversing values.


This sketch of a proposed cottage in Maine (from Arthur Guptill's Sketching and Rendering in Pencil) shows that anything can be used for the defining contrast.  In this case the sunlit wall at the right is nicely shown off by the dark trees behind. while the dark roof works against the lighter sky.


This watercolor of cherries in a bowl illustrates the natural shadows that can define such a concave shape.



In portraiture the same rule is often applied.  A figure in side or three-quarter lighting will have a dark and a light side.  Playing this off of a graded mid-tone background can pop the subject out nicely.



A reflective glass building can have a lot of complex patterns happening, but it still needs to stand out in some way.  I decided to try a dusk view for this tower in China, creating a glowing facade at the base, and a dark on light contrast at the top.




This pencil drawing of a highrise proposal at Canary Wharf in London uses a reverse value trick that goes back 100 years and more.  Just because it is old doesn't mean that it isn't effective.




In architectural illustration reverse values work best with long structures like towers.  It can also be used with long, low facades.  In the Rainbow Bridge US Customs Inspection Building at Niagara Falls, the sunlit end on the left is placed against a dark rack of clouds, while the other end is dark on light.  This helps to break up the necessarily long building, giving the image more interest.  The rainbow was my own "over the top" idea which was not in any way the responsibility of the architect or client.



There are no limits to the variations you can try once you start playing one plane off another.  And the strong value structure leaves you open to color experiments.



Of course you don't have to paint gradients across the entire image.  You can darken or lighten at the edges where it counts, and let the viewer's imagination do the rest.  The slight shading above the reclining nude defines the shape crisply, while the parallel dark and light lines anchor the figure to the ground.

This barely touches on the subject, so I imagine I'll be back sometime.

Monday, September 26, 2011

Stability and Statues

Politicians are necessary - at least they have existed throughout human history, and have been a part of human progress.  A politician has to take 100's, 1000's, even millions of people, each with different interests and characteristics, and convince them to pursue a common goal, with the politician in charge.  Of course this can be done with violence and coercion, but it is best achieved with persuasion.  Democracy, where the people believe that they originally envisioned the common goal, and are merely handing the management of it to the politician, is the most effective system in that the people are entirely behind the idea and the politician.
On the other hand, following Penn Jillette's piece in the Wall Street Journal of Sept. 10, 2011, titled Who's the Real Illusionist?... I hope this is not too cynical.  Politicians are essentially full time magicians on the public stage.  they have to make a majority of "subjects" believe in, like, and vote for them.  That task is fairly easy in a small tribal group, but a polyglot mix of hundreds of millions of people is harder to crack, even with mass media.  And, note the "politicians" includes high level bureaucrats, union leaders, college presidents, non profit leaders, upper military officers, and any number of minor, over-credentialed, ambitious wannabee organizers.  The game appears to be 3 card monty, and the trick to master is the "lift shuffle", where the result seems random but is actually controlled.  The incentive for the politician to work hard to create the illusion is personal power (and resultant wealth).  The incentive for the public to believe the politician's illusion is stability, or the suppression of uncertainty.


Prudence, indeed, will dictate that governments long established should not be changed for light and transient causes; and accordingly all experience hath shown that mankind are more disposed to suffer, while evils are sufferable, than to right themselves by abolishing the forms to which they are accustomed.  -from the Declaration of Independence
Bottom line... in a "free-market" political system (non coercive, multi-party, free-speech) the politician is a necessary "broker", in that he/she listens to voters and tries to find a middle ground amenable to the majority.  Yes, many pols in "safe" districts will be mindlessly partisan (there being no downside), but most pols live in fairly balanced districts (district voter registration doesn't tend to run higher than 60% for the majority party, and only 60-80% of eligible voters tend to be registered).  So when people say "all politicians are corrupt", or "they don't care what I think", they are saying what I used to think; but I was and they are wrong.  Corrupt and unresponsive pols need to be voted out of office, but the rest are at least necessary to a stable society, and the best are worthy of being put on a pedestal (after they are dead, of course).

Wednesday, September 14, 2011

Camera Clipping

A recent Economist article called "Cameras get cleverer" reports on digital cameras that take multiple images at different exposures and then assembles the optimal pieces into a complete picture, assuring consistent light and detail throughout the final image.  This solves the photographic problem called "clipping".  If you have a digital camera you will occasionally take a photo where sections of your picture will look like they were cut out, or will flash on and off, indicating that the light is too strong or too weak for the sensors to record any detail.  Film cameras have the same problem, but simply give you an image where there is no detail, in spite of what you saw through the viewfinder.  This is why early photography of buildings was always done during an overcast day where sunlit surfaces were not too bright and shadows were not too dark.
The Economist called the resulting computer adjusted image (above) "preternaturally well lit".  I would call it creepy myself.  It saves the details, but loses the reality.
Artists have always wrestled with the same problem, but the adjustment was filtered through the eyes, mind and experience of the artist.  Areas in shadow were subtly detailed, while well lit but non-essential elements were abstracted or ignored.  The choice of emphasis made it Art (The Captives by N.C. Wyeth).
Architectural illustration tends toward the over-lit "preternatural" in too many cases.  Some things need emphasis and detailing, but much can and should be left to the imagination.
The above rendering of an astronaut's memorial gives considerable detailing to the semi-silhouetted memorial, but leaves most everything else an abstract suggestion.
The photo-montage of Broadway near Times Square shows the limits of even a good photograph.  The building details are limited and the lighting is glaring.
This rendering of the north end of Times Square gives the same atmosphere as the photo-montage, but eases the contrast and allows detail at the focus of the view.  The central building is handled in such a way that color and space are understandable without having to blacken the context.
The elimination of clipping comes naturally to anyone sketching.  The shadowed areas under the arch were nearly black in a photograph I took, but the concentric "dentils" were plane to see when sitting across the street. 
Of course the artist's job is not illuminating the shadows.  Sometimes you need to obfuscate to get your point across.  My older brother is brilliant and driven, but we don't always see "eye to eye".  My watercolor of him seems to sum it all nicely.

In art, as in any highly unusual, complex question, be eccentric, be indirect, and always more across the grain looking for the underlying pattern.

Tuesday, September 6, 2011

Frans Hals and the Computer

There is a show on Frans Hals at the Metropolitan Museum in NYC (open until Oct. 10).  He is known as an early practitioner of the "painterly" approach, where the "finish" of a painting is loose and lively.  As has been known for some time, he did not just toss off a portrait in one sitting, but instead worked up an image in layers in the traditional manner.  Once the portrait was nearly done he would "finish" it with a flourish that would bring a spontaneity and life to the portrait.
I've never been a great fan of Hals.  His compositions always seemed limited, and sometimes even awkward.  The painting Yonker Ramp and his Sweetheart is one of the few that I like from a compositional point of view.
It also demonstrates his sure eye for color, and his loose, gestural brushwork mixed with accurate representation of materials such as cloth, leather and lace.  The degree of fine detailing juxtaposed with gestural painting can be jarring in some of his paintings.


The Cavalier Soldier, above, shows quite a contrast between the masterful handling of skin and hair, and the almost anal attention to detail in the embroidered sleeve.  Perhaps this was a matter of satisfying a picky client - which brings me to my point.

The addition of gestural strokes to a carefully layered painting is one of the answers to the problem of computer rendering.- the problem of dull, literal detail.  Whatever you have built into a computer model will show up in the rendering, no matter haw inconsequential it is.  Many surfaces will render with the bland sameness that is mathematically correct, but is visually boring.  And any natural elements, like trees or people will lack the liveliness that is expected from living creatures.
The usual solution to this problem is to "loosen" the final rendering in some way.  You can process it through a graphic "filter" to make it emulate a pencil drawing or a gouache painting.  You can scribble the final print with pencil or pastel.  Ink rendering over a print is also possible.  The use of computer tablets has made this process more "forgiving" and variable then ever before.  The following are a series of detail examples with some explanatory notes.

Above is a rather rough print on watercolor paper with pastel scribbled on.


Here is a lobby at dusk, heavily overlayed with pastel.


And, another pastel loosening.  This time on plain matte inkjet printer paper.


In this case a rendering was filtered with "dry brush" in Photoshop, then was layered with the edges of the same rendering to create a hard dark edge.  And finally a print was heavily worked over with pastel.



This dusk street view was a simple print on plain paper, with freehand ink.


Above is the same ink over rendering, except it was done on a computer tablet.


This abstract was a rendered model, layered with a filtered black and white version, and finally painted with airbrushed ink.


This sepia building was rendered, adjusted in Photoshop, and then layered with ink lines on a computer tablet.


Above is a rendering with obvious "bit mapped" stone.  The resulting image had the snow drifting added in Photoshop.  Below is the same detail area "finished" in a painter program, and merged with the original rendering.  Note the softness and brush texture, along with the more realistic inconsistencies of the stonework.

The possibilities are endless, and the problem has yet to be "solved".  The client will always want detail, and the illustrator will always have to balance that against the artistic needs.





Sunday, August 28, 2011

Knowing when to Quit (sometimes & someplaces)

Some of the most interesting pieces of art are the ones that fall into your lap.  When you are painting or sketching and you get an effect that is arresting; half real and half abstract.  Like the watercolor portrait above, interrupted after a couple of washes.


Or this nude, which seemed to work without going into any serious detail.



Or this elevation with some simple shadow casting.



Of course you don't always feel like just stopping.  But if you have a little confidence and experience you can quit on certain areas, and continue on in others.  The above washes already have an interesting feel, but I wanted to get into some Ultramarine Blue to balance the warmth.


Even at this point I wanted to add higher contrast and detail, so I moved on, but limited the work to the broken pediment area.


There is a magic in seeing the concrete reality of the sculptural ornamentation, while seeing areas of stained paper.  It is an effect that I strive for, but it will never be at the level of masters like John Singer Sargent, as shown in his watercolor sketch below (called Bedouins).  In this detail the brisk brushwork and brash colors sit side by side with what must have been careful modeling of the faces.  (image from Wikimedia)








Saturday, August 13, 2011

Knowing when to Quit

...It is one of the hardest things to learn.

Children often get tired or bored, and quit at just the right time to leave a fresh "take" on what they see, or are trying to express.  Having raised two kids I can state that children are simply lucky in knowing when to quit. More often then not a drawing would turn into mush from overworking and revision.  Once or twice a year (after dozens of recycling bins filled with "keep-em-busy" sheets) a beautiful scribble turns up.

The inexperienced artist usually feels a need to work to some sort of perfection.  This is just as well since the novice needs the experience of working more then the she needs the perfect masterpiece.  The skills will come with experience; and mastery will lead to masterpieces.  Just as the novelist needs to learn spelling, grammar, and sentence structure before telling a story, the artist needs to feel natural and comfortable with his tools before expecting perfection.

Unfortunately, the modern world seems to encourage an impatience in people.  If I can photograph my house, or model and render a design in no time, why can't I create perfect beauty instantaneously.  Life is short: meaning that we expect to experience everything in the world right now!  I guess I'm more a stick-in-the-mud then I thought.  In reality life is longer and better then at any time 'til now.

The mature artist, having mastered the tools and techniques, can return to the visceral reaction of a child. Although composition and proportion can be taught, beauty tends to happen when you least expect it.  Letting your skills race along, while your mind's eye stays awake to the possibilities that are developing, seems the best way to get to the right place.




Saturday, August 6, 2011

Reading Art Books

I just finished "reading" J. C. Leyendecker, by Laurence S. Cutler & Judy Goffman Cutler (Abrams, New York, 2008), and it reminded me of something I have taken for granted my entire life: different books are read in different ways.  Reading fiction, history or biography is a "start at the beginning" business.  It is linear, and if well written, can be profitably read from beginning to end.

An art book like J. C. Leyendecker is a different thing; at least to a visual artist.  The pictures come first - no reading of words, just paging through to absorb the images and save the good ones in the brain's image bank.  A day or two later a viewing of the images again, but stopping to read the captions to get the materials, size, technique, etc.  Finally, a week or two later if the previous "readings" have piqued my interest, read cover to cover.  By the way, this book is excellent on all levels and is well worth picking up.

Aside1...  I'd love to know what percentage of the population reads art books in this "image first" way.  Also, what percentage reads art books cover to cover, and how many (like my wife) who avoid them altogether.
Aside2...  Military history and economics (among other subjects) tend to be written and read linearly, but necessarily have many maps, graphs and tables that make reading them more jagged and "skip-a roundish".  Complex subjects in general make one stop, reread and absorb (and are perhaps a different category again).


Anyway, the number of art books that I have actually read entirely is quite small - a fraction of the books I own or have checked out of the library.  And, I treat the internet in the same way: images first, text later.

Oh, and Leyendecker?  An amazing artist with the ability to be highly stylized (see book cover) or rough and ready (above); but always a first class recorder of reality.  I was put off at first by his relentless fashionable look, but was won over by his obvious talents (note the range in the following pieces).  It was also impressive that at a time when photography was easily used to complete paintings, he was said to work exclusively from models.

Reading and Writing

This curious relationship between artists and art books has comforted me in writing my own book.  I am writing it in the same way that I would read it; pictures first.  (actually this was the way I wrote my masters thesis - diagrams and graphs first, then text)

So, I began each section (in this case a two page spread) with a group of images that are examples of the principle that I am going to talk about.  I weed them out and decide on a sequence that will bring the idea out, clarify it, and finally exemplify it in a finished architectural rendering.


Next, I sketch out the layout of the images and text, following the sequence arguement.


Finally I write the text, and assemble the page in Word, so that I will have a complete, detailed layout to present to a publisher or critic/editor.  Although it is not the final product, it is complete enough that there is no confusion about the subject, image quality and vision for the final product.

Enough!!!  Back to the book.