What are the meanings of "M", "A", "S" and "P" in digital camera shooting mode?

The meanings of "M", "A", "S" and "P" in digital camera shooting mode are respectively:

M: Manual exposure mode, you can adjust the shutter and aperture value yourself.

Answer: In aperture priority mode, you can adjust the aperture value, and then the camera automatically adjusts the shutter speed according to the aperture set by the user, so that the photos can be exposed normally.

S: Shutter priority mode, similar to aperture priority mode.

P: program exposure mode. According to the environment, the camera generates several shutter and aperture combinations that can ensure normal exposure for users to choose from, and the exposure degree of each combination is similar.

Advantages of digital cameras:

You can see the picture immediately after taking one picture, which provides the possibility of immediate remake for dissatisfied works and reduces the occurrence of regrets.

Just pay for those photos you want to develop, and other unnecessary photos can be deleted.

Color reproduction and color range no longer depend on the quality of film.

Sensitivity is no longer fixed by film, and photoelectric conversion chip can provide a variety of sensitivity options.

The product structure is relatively simple, the appearance is more exquisite and the product is more and more portable.

Digital cameras are simple, clear and easy to use.

Disadvantages of digital cameras:

Due to the conversion between the imaging element and the image processing chip, the imaging quality is less layered than that of an optical camera.

Due to the different image processing chip technologies of different manufacturers, the color of the imaged photos is different from the real thing.

Due to the lack of core technology in China, the cost of later use and maintenance is high.