What are the contributing pixels?

Don't look at the pixels, look at the size of the picture you submitted. For standard camera photos, you can adjust the file to 300dpi to see the size. If you can't adjust it. . . Then when taking pictures, the higher the pixels, the better. If the camera is more than 3 million, it is enough to adjust the picture quality to the maximum, and if you want to be clear, it is more than 500w W. A basic home camera is enough.