How to set the camera parameters to shoot clearly on cloudy days and at night?

Generally speaking, the aperture should be as small as possible to obtain a larger clear range (large depth of field);

2.ISO should be as low as possible to prevent too much noise (high ISO long exposure is easy to produce noise) and ensure the picture is delicate;

At this time, the shutter plays an important role in the exposure. As for the exposure time, we should try several times and finally find the best time.

You can use a flash when shooting people. In other cases, it is best not to use a flash. First, the flash will destroy the night scene atmosphere. Second, the flash itself has a limited index, so its irradiation range is very limited (only effective within a few meters), and it has no effect on distant scenery at all.