1, near big and far small: when the same big object is close to the eyes, the angle formed in front of the eyes is large and the imaging is also large; When the object is far away from the eyes, the angle formed in front of the eyes is small and the imaging is small. The near big and the far small are the main principles of perspective.

2. Parallel lines that are not parallel to the picture disappear into a point.

3. Close to reality and far from emptiness: the object is in space. Due to the principle of air perspective, the near object is clear and the far object is fuzzy. Being close to reality and far away from emptiness is a manifestation of picture space.

Related recommendations: the method of sketch perspective and the basic terms of perspective.

Perspective painting

The most basic shape in sketch is a cube. When sketching, the representation of a cube is mostly determined by observing three faces.

In addition, the depth of an object can also be implied by the angle caused by the boundary between faces, which involves the perspective law.

Perspective can be divided into three types: one-point perspective (also called Parallel perspective), two-point perspective (also called angular perspective) and three-point perspective.

One-point perspective means that the cube is placed on a horizontal plane, the four sides of the front face are parallel to the four sides of the drawing paper, the upper parallel line facing the depth is consistent with the height of the eyes, and disappears into a point, while the front face is square. Two-point perspective means that when drawing a cube on the screen, when the cube is inclined at a certain angle relative to the screen, its four sides are parallel to the depth.

Two vanishing points are produced. In this case, the length of parallel lines perpendicular to the upper and lower horizontal planes will also decrease, but there is no vanishing point.

Three-point perspective means that when the face and edge line of a cube are not parallel to the picture, the edge line of the face can extend to three vanishing points, and a three-point perspective will be formed when the cube is viewed from top to bottom.

In the perspective view, all changed lines are called changed lines, and unchanged lines are called original lines. Remember the law that the near is big and the far is small, and the near is real and far from imaginary.