What is a human head? Can it be used to take portraits?

Haha ~ how could it not? The focal length of 35mm is wider than 50mm and narrower than 28 mm. The so-called humanistic head only refers to the focal length that many people use to shoot humanistic documentary works. Everyone thinks this focal length is suitable, but the specific shooting has to be decided by the author himself. Just like shooting a 24mm portrait, you can take care of both the scenery and the people. 50mm is similar to the human eye, and even a gas cutting machine like 200mmf2 can separate the background well.