What do PF and MF on digital cameras mean?

PF is pan focus and MF is manual focus.

1. Pan-focus is a special term for photography technology, that is, all the scenery within a certain range of the picture is clear. It refers to the state of reasonably adjusting the aperture and focus point so that clear imaging can be achieved from a distance of about 1m to infinity.

2. Manual focus refers to the focusing method that achieves clear focus by turning the lens focus ring or stepping by pressing the direction keys on the body. Manual focus in the era of digital cameras is generally used when autofocus fails. It is a powerful supplement to autofocus and is still an indispensable function in the digital era.

Extended information:

Manual focus in the era of digital cameras is generally used when autofocus errors occur. Specifically, manual focus is required when the contrast of the scene is low, the contrast between the subject and the background is too high, the ambient brightness is low, the ambient brightness is too high, there is interference from high-brightness light sources, it is necessary to shoot through a transparent barrier such as glass, or the subject is outside the focus area. . Cameras with live view can easily use manual focus with 2x or 4x magnification and achieve accurate focus without requiring excellent eyesight.

Baidu Encyclopedia - Pan Focus

Baidu Encyclopedia - Manual Focus