What is the P file of Canon SLR camera used for? What's the difference between P file and M file? What is the function of P file?

The P file is an automatic file, which means that the aperture (blur degree) and shutter speed (shutter speed) and iso (sensitivity to light and shade, fineness of the picture) are controlled by the camera itself, and you only control the focal length and composition. Normal scenes can be used, but if the light is uncertain, the photos taken are easy to be overexposed or too dark.

M is a full manual function, that is, the aperture, shutter and iso are all set by yourself, and the camera is exposed according to your setting. As for the exposure of the photos taken, it depends on whether the parameters you set are correct.

Extended data:

Exposure mode is the mode in which computers use natural light sources, which is usually divided into various modes, including shutter priority, aperture priority, manual exposure, AE lock and so on. The quality of the photo is related to the exposure, that is, how much light is needed to make the CCD get a clear image. Exposure is related to light passing time (determined by shutter speed) and light passing area (determined by aperture size).

References:

Baidu Encyclopedia-Exposure Mode