What is the relationship between field of view and scope?

When you start to get in touch with scopes and telescopes, you will often hear the term "field of view". So what is field of view, and what is the relationship between scopes and it?

How far a scope can see is related to something? It has a certain relationship with the field of view. The field of view refers to the field of vision that we observe through the eyepiece of the scope, which is the range we can see. The size of the field of view is a factor that affects the shooting effect of players. When the field of view is large, you can see more scenery, which is beneficial to capture the target object, but it is not convenient for shooting. When the field of view is small, you can see less scenery, and you can shoot the target well, but it is more difficult to capture.  

First of all, the field of view is related to the magnification of the scope. When we turn down the magnification of the scope, the range seen from the eyepiece also increases, which means that the field of view is increasing. When we turn up the magnification of the scope, the range observed from the eyepiece will become smaller, which means that the field of view is decreasing. The higher the magnification, the smaller the field of view. Therefore, in the case of poor lighting conditions, if the field of view is too small, our shooting will be affected, so the higher the magnification of the scope, the higher the manufacturing process requirements and the greater the manufacturing difficulty. Some scopes can reach 20x magnification, but for ordinary players, using a 4x to 9x scope can meet daily shooting needs.  

Secondly, the field of view is also related to the objective lens of the scope. Although the size of the objective lens does not affect the size of the field of view, it affects the brightness. When the field of view is suitable and the brightness is good, it is very convenient to shoot and aim at the target. The larger the objective lens, the better the brightness of the scope. The larger the field of view, the shorter the focal length.