What is the golden section composition method?

As shown in Figure A: The "golden section" formula can be derived from a square. Divide the base of the square into two equal parts, take the midpoint X, use X as the center of the circle, and the line segment XY as the radius to make a circle. The intersection point with the base line is point Z, thus extending the square into a rectangle with a ratio of 5:8 (Y' point is the "golden section point"), A: C = B: A = 5:8. Fortunately, the ratio of the 35MM film format is very close to this 5:8 ratio (24:36 = 5:7.5)

Figure A

Principle 2

Figure B: Through the above derivation, we have obtained a rectangle that is considered perfect. Draw a diagonal line connecting the upper left corner and lower right corner of the rectangle, and then go from the upper right corner to the Y' point (the golden section point, see Figure A) Make a line segment that intersects the diagonal line, thus dividing the rectangle into three different parts. Now that the golden section has been completed in theory, the next step is to roughly arrange the scenery you want to photograph according to these three areas. You can also flip the diagram 180 degrees or rotate 90 degrees for comparison.

Picture B