Difference between Nine-grid Structure and Trigonometric Structure in Photography

Jiugongge composition: it is to divide the picture into nine small pieces with four lines. The intersection of these four lines is the golden section of the line.

Trigonometry: dividing a picture into three equal parts.

Jiugongge composition method

It is to put the main body or important scenery at the intersection of "Jiugongge". The four intersections of the word "well" are the best positions of the main body. Generally speaking, the intersection on the upper right is the most ideal, followed by the intersection on the lower right. But it is not static. This composition format is more in line with people's visual habits, making the subject naturally become the visual center, with the characteristics of highlighting the subject and making the picture tend to be balanced.

It is found that the four points where the four lines of Jiugongge meet are the most sensitive places for human vision. In foreign photography theory, these four points are called "interesting centers". As the name implies, it has been repeatedly proved that when the subject is at or near these four points, it is easiest to get the "eyeball".

Triangular synthesis

It refers to dividing the screen into three parts, and each sub-center can be put together with the main form. This composition is suitable for multi-modality parallel focus subjects. It can also represent large space, small objects, and vice versa. This composition is vivid and concise. It can be used in different scenes such as close range.

When observing the scenery through the viewfinder, imagine dividing the picture into three equal parts. The intersection of lines is the place where the interesting center and other minor scenery are arranged. Of course, this rule can be applied flexibly. The center of interest doesn't have to be exactly at the intersection, but it must be in that area. Those intersections at the right end of the picture are usually considered to be the strongest; Of course, the left third is sometimes used to arrange interesting centers, depending on how the picture is balanced. Trigonometry applies to horizontal and vertical frames. Arrange the subject and partner according to the three-point method, and the photos will be compact and powerful.