Note: As you are setting up your system, you need to fine tune the various parameters of the focal length equation until you achieve the right combination of components that match your inspection needs and meet your cost requirements.

• 注：当你设定你的系统时，你需要微调焦距方程式的各种参数，直至你达到配合你观察所需和迎合你价格要求之配件的正确组合。