What are the photographic angles of three-quarters and seven-eighths faces?

This is an arrangement of head posture in portrait photography.

Seven of the eight faces, the subject's face slightly deviated from the lens. In other words, you can see that one side of the subject's face is a little more than the other, but you can also see the other ear of the subject away from the camera.

Three quarters of the face, in this case, the camera can only shoot one ear, and more parts of a face can be seen. With this posture, the farther eye looks smaller because it is farther away from the lens than the other eye. For this reason, it is very important to keep the smaller eyes of the subject (usually one eye is smaller than the other) close to the camera when shooting a portrait with a three-quarter angle of view. In this way, the perspective effect will make the two eyes in the photo look the same size.

Typical case:

Eight or seven:

Zhao; a surname

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Four or three:

Zhang Xin, only to find that Zhang Xin likes 3/4 so much that his left eye is far away, which is obviously intentional.

It is inhuman not to adopt this question.

PS: Reference, Best Family Portrait Photography Guide, P40.