Why is the subject blurred and the background clear after SLR shooting?

You still don't understand the basic question. Although you have played with these two machines, you must have never read the instructions. I guess you usually shoot with P-files.

Clear subject and blurred background are the characteristics of SLR. Mainly determined by the aperture of the lens. When shooting with large aperture (f 1.8-4), the focused object is clear and the background is blurred. If you want the background and subject to be clear, shoot with a small aperture.

At present, the best aperture value for lens imaging on the market is f8- 1 1. If you shoot with the aperture of F 8, the background and subject will be clearer. Distance is also a problem. For example, if you hold something in front of your eyes, you can see it clearly, and the background must be blurred. . .