Small spittoon portrait shooting skills, is it possible to use aperture first? What are the skills of man-machine distance?

I guess you are a beginner. Theory is necessary, but in the era of digital photography, the key is to practice more. Because if you are not satisfied, delete it anyway. But it is not enough to just shoot more and shoot indiscriminately. You don't even know which photo you took is good. You should have post-processing, reasonable cutting, color modification and exposure. At the same time, post-processing is also a process for you to review photos, find out the best and sum up your own shooting experience. Small spittoon is a fixed-focus lens, so it is difficult to grasp the distance between man and machine, it is difficult to compose a picture, and sometimes it is necessary to edit it later. In addition to adjusting the degree of background blur, the aperture is also affected by the intensity of surrounding light. So there is no certain pattern.