There are many kinds of watercolor pigments, but it is impossible to use all colors when painting. In fact, there are only seven or eight kinds of pigments that are often used, and generally everyone will have their own painting habits.
For the convenience of color matching, they are generally arranged according to the cold and warm categories of colors. Commonly used colors are: crimson, bright red, vermilion, orange, khaki, medium yellow, lemon yellow, light green, emerald green, lake blue, ultramarine blue, blue, Payne gray, Van Dyck brown, ripe brown and ripe ochre.
Cold pressed watercolour paper can be used to draw paper. For beginners, the appropriate frame size is generally not less than 20cm*30cm and not more than 40cm*50cm.
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Paper is usually made of cotton, linen, rags or wood pulp. Wood pulp papermaking is very cheap, and it is easy to deteriorate, yellow and break paper if left for too long. Usually used for sketching exercises. A good watercolor paper should be made of cotton, hemp or rags, and its composition will be marked on the paper itself or in the sample catalogue. The pH value is neutral. And there is a brand watermark, which is a guarantee of excellent quality.
There are two kinds of paper: handmade paper and machine paper. Handmade paper is expensive because of its difficult production process, good quality and meticulous treatment. Compared with machine paper, it is die-cast, mass-produced with filters and machines, and the price is cheaper than manual paper. Generally, there are three kinds of paper treatments with different roughness, such as surface roughness, cold pressing or hot pressing.
Fine hot pressing, smooth surface, not easy to absorb pigment. It can be used to draw finely described works or small-sized paintings. Cold pressing is an intermediate purpose, which can give full play to the characteristics of watercolor and is also the paper used by most watercolor painters.
Paper with rough surface treatment has high water cooperation and slow drying, which is suitable for painting themes that need long-term treatment. After laying flat and drying, it can produce obvious precipitation effect, which is more suitable for painting rough themes, such as stones, brick walls and rusty iron.
The specifications of watercolor paper are mostly based on 22X30 inches, which is called folio (2K) in Chinese and is about 56x76 cm in size. Fold the folio into 4 quarts (4K) and then into 8 quarts (8K).
Paper that is usually available in the market. The minimum opening is 16, and the maximum opening is 2 times (30x44 inches), which is called full opening. In fact, the paper specifications of different brands are slightly different, and the specifications of Japanese paper are obviously different from those of European factories.
The thickness of paper is measured by weight, and there are two calculation methods: Libra (abbreviated as lb) and g/m2. The higher the number of pounds, the higher the number of pounds. The thicker the paper. The higher the price. Paper expands when it meets water.
If the paper is too thin. After painting watercolors. There will be serious bumps. And this uneven paper will mix color and water everywhere, destroying the picture. So choose a thicker paper.
In addition to sheet-fed retail. There is also a watercolor book and a whole roll of watercolor paper. There are many high-grade watercolor papers that are only sold as a whole. For example, the watercolor paper used by Rembrandt experts and the advanced watercolor paper hand-made by Mo in Japan.
Watercolor paper does not have the same specifications as ordinary watercolor paper (the painter can choose the most suitable size according to the needs of the theme), because there is a thick cardboard at the bottom and a cover on the surface, which is also suitable for sketching outside.
Choosing the right brush for watercolor painting is very important. There are two kinds of special watercolor pens: flat head and round head. Most watercolor brushes are made of natural and synthetic materials, and there are also expensive mink brushes, but ordinary brushes are enough for ordinary watercolor lovers.
In general sketch or creation, you need to prepare three kinds of round-headed brushes, one with a width of about three to four centimeters, and one or two flat-headed brushes. These are just some suggestions for beginners. Professional watercolor painters choose tools according to their own experience and interests.
Baidu Encyclopedia-Watercolor (a painting completed by mixing pigments with water as a medium)