Portrait photography, how to choose a scene, how to choose a scene with depth, and how to choose a lens, I don't know in my heart.

It depends on your machine and brand. First of all, if your machine is a full-frame machine, people should generally have a focal length of more than 80mm, such as Nikon's 85 1.4, Canon's 85L and Sima's 85 1.4, which are all good choices.

If your machine is a newspaper cutter, a small spittoon is enough. We also call it Genie, which is 501.8d. Of course, you should buy 501.4,501.2, which is better.

If you want to use a zoom lens, anything with a focal length of more than 80mm will do.

If I choose a scene, I personally think the background is blue-green and red. If you have a sense of depth, for example, if you lean against the railing of a dam and then focus on people, the railing will blur and extend far away. Actually, you ask too many questions. You can only look at other people's works and practice by yourself.