What if shadows sometimes appear around the Panasonic camera when shooting?

Shadows will appear around Panasonic cameras when shooting, which is very common in consumer digital cameras, but not all shots will have shadows. Generally speaking, it looks like the following

1? When the aperture is small and the focal length is wide,

2? Equipped with extended wide-angle lens or hood;

These are actually completely avoidable, and the solutions are as follows:

1? No hood;

2? Don't use the automatic mode when shooting at wide angle. Try to manually control the aperture mode, and adjust the aperture to the maximum, or decrease it by1-2 at most;

Basically, the problem of circular shadow on the edge can be solved.