Architectural skills-golden section line

Trigonometry is a simple and practical method using the golden section, which is generally used in photography. There are four lines at 1/3 at the top, bottom, left and right of a picture, and the point formed by the intersection of these four lines is called the golden section point.

Putting the subject of the photo at the golden section will make the photo look more harmonious, highlight the subject at the same time, and make the picture more flexible and spatial.

Generally speaking, the camera will have a reference line of trisection. When taking pictures, you can set the display reference line to make the position of the subject more accurate. PS will also display reference lines when cropping pictures to help you crop pictures better.

Fibonacci spiral, also known as "golden spiral", is a spiral curve drawn according to Fibonacci sequence. There are many patterns of Fibonacci spiral in nature, which is the most perfect classical golden ratio in nature. The rule of drawing is to draw a 90-degree sector in a rectangle with Fibonacci sequence as the edge, and the connected arc is Fibonacci spiral.

In fact, the golden section theory has existed since ancient times. It is a geometric formula invented by the ancient Greeks, which is mainly manifested as "harmony". Therefore, after photos are applied to photography, people often feel comfortable and natural. The face of the protagonist in Leonardo da Vinci's famous painting Mona Lisa coincides with the golden ratio.

There are many techniques of composition, which need us to accumulate slowly and use flexibly in order to shoot more satisfactory works.