Digital photography 3 golden cut

Digital photography 3 golden cut

The term "Composition" is the translation of English composition, which is a term used in plastic art. In "Ci Hai", I talked about "Composition" as an artist who arranged and handled the relationship and position of people and things in a certain space to express the theme and aesthetic effect of the work, make individual or local images an integral whole of art. In traditional Chinese painting, it is called "chapter" or "layout ".

First, let's talk about the distribution and shape in the diagram. Here we have to mention two terms: jiugongge and the interesting center.

Before talking about jiugongge, let's talk about the famous golden split.

Since the ancient Greek people discovered the golden split, this proportion has been widely used as the best proportion of aesthetics.

In fact, golden division is a division rule in plastic arts. It is also referred to as the golden split rate, or the golden rate for short. The division method is to divide a line segment into two parts, so that the square of a part equals the product of the other part and the whole, or make the ratio of a part to the whole equal to the ratio of the other part to this part. That is, the line section AB is separated by point C, so that (Ac) 2 = CB × AB, or make AC: AB = CB: AC.

Practice has proved that its ratio is about 1.618: 1 or 0.618, which is called the gold ratio. The golden ratio was first discovered by the ancient Greek, and was considered the most beautiful and harmonious proportion by Europeans in the 19th century. The golden ratio is widely used in plastic art and has aesthetic value, especially in the length and width ratio of arts and crafts and Industrial Design (such as the book). It is often referred to as the golden division. In the 20th century, French architect Le cobusié found that the gold ratio was a series of characters. He combined it with the human body size, proposed a gold standard ruler scheme, and regarded it as the scale of modern architectural beauty. France has also produced a group of stereoscopic painters named Golden-separated painters, focusing on the proportions of the shapes.

In actual use, only an approximate value is used for the ratio of gold. The simplest method is to follow Series 2, 3, 5, 8, 13, 21 ...... The ratios of, and are obtained as an approximate value. This segmentation method is also used for the optimization method.

Let's talk about jiugongge. The source of jiugongge is a structural model invented by the Chinese, but unfortunately it has an astonishing theoretical connection with the golden split! We split the pictures up, down, left, and right into four lines in gold. We are surprised to find that this is what the ancients in our country have said! People found that the four points at the intersection of the four lines of jiugongge are the most sensitive parts of people's vision. In foreign photography theories, these four points are called the "interesting center ". As the name suggests, it is proved repeatedly that when the subject is in or released near the four points, it is the easiest to get the "eye ":)