What is the difference between camera standard (S) and excellent (F) imaging principles in photography?

There is no difference in imaging principle, but the degree of file compression is different.

The imaging principle of digital camera is basically photoelectric conversion. First, CCD is sensitive. It converts optical signals into electrical signals, and then the electrical signals are converted into digital signals. A photo is a data packet, which is a RAW file.

The camera with COMS as the photosensitive element completes the conversion from optical signal to digital signal in COMS, and the basic principle is the same.

RAW file is not an image format, so it can't be interpreted generally, and the volume of RAW file is very large. Generally speaking, the shooting of an 8-megapixel RAW file will exceed 20M ... Therefore, our camera will process the RAW file, convert it into an image file and compress it.

So there is no difference in imaging principle, only the compression degree in the later stage. For example, excellence may be in TIFF format, and S may be in JPG format. Or excellent is 80% compression, the standard is 50% compression, and the settings of each brand are different.

This compression is not necessarily to compress the number of pixels, but to compress the quality of pixels. For example, when you choose F mode, there may be eight different blacks in the photo, while when you choose S mode, there may be only two different blacks. Of course, the file size is different.