b. Light and Shade. It is the distribution of light and shadows in a picture that gives it the appearance of reality. A mere outline drawing is flat and has no semblance of life. The paintings of the ancient Egyptians are good examples of pictures that have no light and shade, and we all know how flat, stiff and unreal they appear. In pen and ink, and charcoal drawings, light is indicated by white and shadow by black, but between the two extremes are introduced various shades and tints of gray that make the variety of tone in shadows. This varying of the strength of shadows is everywhere in nature, though most of us are blind to it. In looking at any object for the purpose of distinguishing the lights and shades upon it we should half close our eyes and look intently at all parts of it. Under an inspection of this sort the building which we thought to be all of even light is seen to be dotted with patches of shadow of different intensity, showing that there are projections where the light from the sun strikes clearly or depressions into which it cannot enter so freely. A picture should give the same effect, and it is this effect, which includes also the distance from the eye as well as the shades from the light source, that we call “values.” If we look at a tree in the way described we see that it is covered with patches of green in light or dark tints and that these color values are the lights and shades of which we are speaking. There will be one point of highest light and an opposing point of deepest shadow, and upon the proper arrangement of these as well as upon the patches of minor importance depends the lifelike appearance of the objects in the picture. Van Dyke says there are three things concerning light and shade that should be looked for in every picture, viz.: that everything, no matter how small it be, has its due proportion of light and shade; that there be one point of compass from which the light comes; that there be a center of light in the picture itself, from which all other lights radiate and decrease until they are lost in the color or shadow.
c. Tone and Color. The first thing that seizes the eye in a painting is color, and the brightest, gayest colors are the ones that are most likely to attract. In fact they are the only colors that the inexperienced may see, for many a person is blind to the subdued tints and shades that are really the most attractive to the trained eye. Good coloring, then, does not mean brightness alone. It is the relationship, the qualities and the suitableness of colors one to another, whether they be in shadow, half-tint or light, that constitute good coloring. Brilliant dresses and inharmonious ornaments strike the refined eye with displeasure, the wearer is “loud” in her dress. Subdued colors relieved here and there with a harmonious dash of brightness show correct taste. So in pictures those that have the low or deep tones, that are rich and harmonious, are the ones that are most appreciated by the experts, and are the ones usually found to have been painted by the masters. Nevertheless if high color combines richness and harmony it shows a fine skill. Tone has to do with the quantity of color used in the painting, and harmony with the qualities of colors. Tone and harmony must combine to make perfect coloring.
d. Composition. If we study any great poem, drama or novel, one that is constructed with a due regard for unity, we find there is one central character or idea and that all other persons, all incidents, scenes and all the little devices that go to give reality to the conception are subordinated to the central person or idea. Unless this is done the creation lacks unity and therefore lacks force, beauty and coherence. The same facts hold true of a picture. Every good picture is so arranged and drawn that the important idea is centralized and the parts are unified and harmonized until the whole is single in its effect. This is accomplished by what is called in the language of the painter, “composition.” Important things are recognized and lesser things subordinated to give beauty, clearness and brilliancy to the central idea. While these facts are most obvious in pictures that contain figures, it is no less true in landscapes or other pictures which contain no figures. For instance, a moonlight scene on the Hudson would have as its central idea the beauty of the light on the water and the mountains. To secure this the artist would keep down the lines of the mountains, subordinate the details in the foreground and place as the central idea in the picture the pale shimmering light from the moon whether that body be itself visible or not. Oftentimes in looking at a picture it is difficult to tell wherein its excellent composition lies, but the absence of strength and unity is unerringly felt.
e. Atmosphere and Perspective. We are all familiar with the diminished size of objects seen at a distance and realize that the apparent coming together of two parallel lines, as those of a railway track, is owing to the same cause. We know, too, that this diminishing must be shown in a picture or there is no sense of distance for the spectator. What is not so clear to us usually, is that there is as great a difference in color and the appearance of objects. The diminution of size is linear perspective and the change of color due to distance and atmospheric conditions is commonly called aerial perspective. The tendency among amateurs is to paint a tree green no matter how far away from the spectator it is, while a little observation and study would show the veriest tyro that the green of a distant tree has faded till to the eye it looks a bluish gray. Moreover, outlines have faded and seem to flow into those of other objects, and all combine to give to the picture the true appearance of distance, which is what the artist seeks and the one who looks at the picture has a right to expect.
f. An Application of the Foregoing Principles. What has been said on this subject of judging a picture may be made clearer by an application to one of the pictures in Journeys. Let us take, for instance, the color plate facing page 304, in Volume VI. It is a reproduction in color of the painting in water colors, Bob and Tiny Tim, and will show what is meant by the comments above almost as well as the original painting would have done.
1. Tone and color. Are the colors in the picture bright and gay or are they subdued? What are the brightest colors? Are the colors harmonious or do they “quarrel” as they come to the eye?
Are the shades of blue and purple and lighter colors in the clothing of the various persons glaring or subdued? Do you observe any inharmony which offends the eye, or are you pleased with contrasting colors and tones? The harmony in color is due to the choice of colors that do not contrast too strongly. The artist knew which were complementary colors; that is, which, united, form white. Which colors in the picture do you think show warmth, and which show cold, as suitable to out-of-door scenes? What effect on the rest of the picture does the olive green of the interior of the room have? What effect does the gray green of the open door have?
2. Light and Shade. Is the picture flat and without appearance of life, or do the persons and objects stand out in a life-like manner? Are parts of the picture in shade, so that outlines are lost? The artist has shown the left of the building in the foreground as in shadow; how is this effect produced? Do you observe gradations of tone in the shawl on Tiny Tim, which indicate relative light and shadow? Where is the highest light in the picture, and where the darkest shadow? Are the lights strong as if the sun were shining, or soft and diffused, as is noticeable on a snowy winter’s day?
3. Line. Although you cannot see Bob’s feet in the picture, do you feel that his body is well supported? Is his position natural, as of one carrying a burden on one shoulder? Are the lines of the figures in the foreground clear and distinct? How do they compare with the lines of the figures and building across the street? In both cases the artist gives us all that is necessary to convey the impression of reality. In the use of oils and water colors, sharp lines are avoided. Colors are used so that different surfaces and effects flow into one another; the lines are concealed and we have the very counterfeit of reality. This constitutes good drawing.
4. Composition. What is the central idea of the picture? The artist has brought the principal figures into the immediate foreground; do the arrangement of color, contrasts of tone values, and the smaller figures in the background give life and significance to the figures of Bob and Tiny Tim? Would the effectiveness of the picture be greater or less if the artist had failed to show the snowy outdoor scene, with its holiday spirit? Do you recall the incident in the story portrayed by the picture? Are the characteristics of Bob and Tiny Tim, as described by Dickens, faithfully followed by the artist? Do their faces show the spirit of Christmas? If you had not read the story, would you not feel a glow of sympathy for the little boy, and a wish that you could join in making a happy holiday for him? Has not the artist succeeded in bringing the scene described by the author more vividly and beautifully to us?