How to prevent the surrounding environment from turning black by shooting chandeliers with SLR?

Adjust the exposure compensation, or use M gear, or turn off the chandelier or turn it to the darkest.

The chandelier is much brighter than its surroundings. When the camera measures light, it will ensure that part of the light is exposed normally, which means that the background will become dark. If the brightness difference between the chandelier itself and the background remains the same, then exposure compensation or using M-file is actually artificially increasing the exposure, which makes the background exposure normal, but it also means that the lamp itself will be seriously overexposed.

Another method is to adjust the brightness difference between light and background. To put it bluntly, dim the light or turn it off directly, or take two pictures, one with normal light and the other with normal background, and then recombine.