How to focus Nikon 120f4 medical lens?

There are three main focusing methods for Nikon cameras. On the front side of the lens, you can see three English letters, C, S and M, which respectively represent the three focusing modes of Nikon camera. Turn the focus mode switch dial to a different letter position to switch the corresponding focus mode. C stands for continuous autofocus, S stands for single autofocus, and M stands for manual autofocus.

1. Single autofocus means that if you hold down the shutter for half a minute after focusing, you will not focus again and the focusing distance will not change. For the shooting of daily subjects, we usually use single autofocus to focus, and single autofocus is very convenient for composition after focusing.

2. Continuous autofocus means that the camera presses the shutter half, and after focusing, it will lock the target or lock the focus area. Once the focal length of the target and the camera changes, the camera will automatically refocus. Continuous autofocus is most suitable for shooting moving targets, such as sports photography, wildlife photography and automobile advertisements.

3. Manual focusing refers to a focusing method to realize clear focusing by rotating the lens focusing ring or pressing the fuselage direction key. Manual focusing in the digital camera era is generally used when autofocus fails, which is a powerful supplement to autofocus and is still an indispensable function in the digital age.