How to take a long exposure with Sony rx 100m2?

If it's a photo shoot, it's better to have a cable release. According to the relevant public information, if the exposure time is less than 30s, it can be in the shutter priority file, that is, S file; If the time is longer, you can set it at M, and then adjust the pulsator until the shutter shows the light bulb, so you can decide the exposure time by yourself. There is also taking a star orbit, usually taking photos at equal intervals first, and then superimposing the software later. Now it is much easier for some Sony micro-singles to use time-lapse photography apps.