Oil painting is a painting made on canvas linen, cardboard or wood with quick-drying vegetable oil mixed pigments. The following are the practical techniques and expressions of oil painting that I have compiled for you. According to personal situation, for reference!
There are three main techniques of oil painting: transparent covering method, opaque covering method and opaque primary color method.
A, transparent coating method
That is to say, paint that is not white but diluted with color oil is used for multi-level description. It is necessary to brush the next layer after each layer is dry. Because the color of each layer is relatively thin, it can vaguely reveal the color of the lower layer and form a subtle tone with the color of the upper layer. For example, painting a stable blue color on a deep red layer will produce a rich effect of purple in the blue, that is, heating up in the cold, which is often a tone that cannot be transferred on the palette. This painting method is suitable for expressing the texture and heavy feeling of objects, especially for vividly depicting the delicate color changes of human skin, which makes people feel that the F of the skin epidermis is flowing with blood. Its shortcomings are narrow color gamut, meticulous production process and long time to complete the work, which is not easy to express the artist's current artistic creation feelings.
Second, opaque superposition method, also known as multi-level coloring method.
When painting, first draw a large figure with a single color, and then shape it with multiple colors. Dark parts are often painted thin, while middle tones and bright parts are painted thick layer by layer, or covered or left, forming color block contrast. Because of the different thickness, it shows the rich charm and texture of color. There is no strict difference between transparent and opaque paintings, and painters often use them comprehensively in one painting. When representing objects in darkness or shadows, transparent superposition method can produce a stable and profound sense of volume and space; opaque superposition method is easy to shape the body outside the darkness and increase the color of the picture.
Third, opaque one-time coloring method, also known as direct coloring method.
That is to say, after the outline of the object is made on the canvas, the color laying is basically completed at one time by virtue of the color feeling of the object or the idea of the color of the picture, and the incorrect part is scraped off with a painting knife before the color adjustment is continued. In this painting method, each dip has thick pigment, high color saturation and clear brush strokes, which is easy to show vivid feelings when painting. /kloc-Many painters have adopted this painting method since the mid-9th century. In order to achieve the effect of full-color layer after one-time coloring, we must pay attention to the use of brushstrokes, that is, painting. Commonly used painting methods are divided into flat painting, loose painting and thick painting. Flat painting is to draw a large area of color with one-way strength and even brush strokes, which is suitable for shaping static bodies with stable and steady composition; Casual painting means that the brush strokes are loose and flexible according to the natural turning trend of the painted object; Thick coatings are all or part of the thick piles of pigments, some of which form color layers or blocks up to several millimeters, which make the pigments present interesting textures and enhance their image.
Oil painting techniques include frustration, patting, rubbing and line drawing.
1, frustration is a method of coloring with the roots of oil painting pens. After pressing the pen, it is slightly frustrated and then lifted, such as calligraphy against the front, which is vigorous and solid. The colors of the nib and the root of the pen are different, and the light and heavy direction of the pen holder is different, which can produce many changes and interests.
2. Pat is a technique of gently patting the screen with a wide oil painting pen or fan pen. Flapping can produce a certain undulating texture, which is neither very obvious nor very simple. You can also process the original strong strokes or colors to weaken them.
3. Rubbing refers to the method of directly manipulating two or more different colors on the screen with a pen. After color processing, it produces natural mixed changes, obtains subtle and bright colors and contrast between light and shade, and can play a transitional role.
4. Line refers to the line with pen drawing. Oil painting lines are generally marked with soft and sharp clues, but in different styles, round heads, proofreaders and old flat pens can also draw thick lines similar to strong books. At the beginning, both eastern and western paintings were modeled on lines. In early oil paintings, drafts were generally drawn with precise and rigorous line outlines. In Tan Pelina technique, the method of arranging wires is the main means to form light and shade.
Advantages and disadvantages of hand-painted oil painting and printed oil painting
Advantages of hand-painted oil painting
First, the picture effect is good.
Hand-painted oil painting shows people a natural side, and it doesn't look artificial.
Second, the preservation time is long.
Hand-painted oil paintings have been preserved for a long time. There are many famous oil paintings in the world, all of which have a history of hundreds or even thousands of years, so hand-painted oil paintings have great collection value.
3. Strong decorative effect
Hand-painted oil painting has a strong artistic flavor, and a tasteful oil painting can reflect the owner's elegant artistic temperament, give people a feeling of otherness and beautify the owner's living space.
Disadvantages of hand-painted oil painting
First, the production process is long.
The production time of an oil painting is usually three to fifteen days, and the production process is too long, reminding our customers that a good work is worth waiting patiently.
Second, the new oil painting has a taste.
The smell of the new oil painting is really a bit unacceptable. Like the newly renovated house, the painting can basically eliminate the smell of the oil painting in a month or two. But there are also high-grade oil painting pigments that are tasteless, but they have not been sold in China. So many other artists don't have this business, and I also have a headache.
Third, hand-painted oil painting is expensive.
Hand-painted oil painting is indeed more expensive than inkjet printing and printed matter, and the cost of hand-painted oil painting is high and the production process is complicated. If the cost of hand-painted oil painting can be the same as that of ink painting and printed matter, I believe that hand-painted oil painting will definitely eliminate ink painting and printed matter oil painting in the market.
Advantages of ink-jet oil painting and printed oil painting
First, the picture is clean.
Ink-jet oil paintings and printed oil paintings are clean and flat, with good effects, bright colors and tasteless.
Second, the production is simple and the time is short.
No matter how complicated an oil painting is, as long as it is on the inkjet printer or printing machine, a perfect inkjet oil painting will appear in front of us in a few minutes.
Third, the production cost is low.
The production cost of ink-jet oil painting and printed oil painting, a canvas and printed watercolor can make a complex oil painting with low cost.
Disadvantages of ink-jet oil painting and printed oil painting
First, the picture is simple and has no sense of hierarchy.
This is fatal, which proves that machines can never replace manual work.
Second, the storage time is short and it is easy to fade. Generally, the preservation time of spray-painted oil paintings and printed oil paintings will not exceed two years, and the color of canvas is easy to age.
Oil painting protection steps
If an oil painting is properly preserved, it can remain unchanged for hundreds of years, otherwise the color layer may crack, fall off and change color. So, how to protect your oil painting from damage?
First, the back of the canvas can be thinly coated with two layers of natural beeswax dissolved in turpentine in advance, which can completely prevent the damage caused by soaking in humid air.
Second, oil painting should avoid long-term direct sunlight, because ultraviolet rays are very destructive to color and will cause fading and discoloration.
Third, don't stick two paintings together in oil painting. Avoid the adhesion of the picture caused by the temperature rise, causing the paint to fall off and damage the picture.
Four, when rolling oil painting, make the canvas face inward, the picture face outward, roll a layer of paper tube outside, and then wrap it with plastic sheets to prevent the painting from cracking.
5. The room where oil paintings are stored should be ventilated and moisture-proof, as far away from the bathroom and kitchen as possible, and pay attention to prevent dust and lampblack from damaging the canvas. The room should maintain a certain temperature and humidity. Moist paintings must be dried slowly in the shade to avoid exposure to the sun, otherwise the paintings will fall off easily.
6. If there is dust in the oil painting hanging on the wall, you can gently wipe it with a slightly wet clean cloth. If there is soot on the oil, you can try to gently scrub it with light soapy water and clean water, then quickly absorb the water on the picture with a sponge, and then gently blow the surface of the oil painting with an electric fan. If you encounter an old cracked oil painting, you must use less water and dry it locally. If professional varnish is used for oil painting maintenance, wipe the picture with a clean cloth before spraying varnish.
Seven, the general oil painting can be preserved for two or three hundred years, but with the passage of time, some oil paintings may crack after decades. If you have a large collection, you can wrap the oil paintings in plastic cloth and put them in wooden cases to prevent serious injuries.
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