What is the reason for the blurred picture taken by the camera?

1. There are no clear parts in the diagram, which are all fuzzy.

It may be caused by camera vibration, for example, the shutter speed is too low when shooting, and the hand is shaking when shooting with hands.

2. Local clarity.

There may be some reasons, such as inaccurate focusing, camera autofocus difficulty, focus offset, focus system failure, focus selection error, etc.

3. The lens is wet, and there is fog on the lens, which will also cause the picture to be blurred.