What is the meaning of t w on the camera lens and how to set it?

W is wide angle, English wide angle.

T stands for telephoto.

That is to say, the more you twist in the W direction, the shorter the focal length of the lens, the larger the range you can see, but the smaller the proportion of what you see. On the contrary, the more you twist in the T direction, the longer the focal length of the lens, the smaller the range you can see, but the larger the proportion of things.

Remember to adopt