Sensitivity to light is expressed by the ISO number (recommended exposure index).
The product automatically shoots multiple images continuously, combines them, reduces the noise, and records them as one image.
If the product number of your camera is within the range below, refer to the following URL.
3010001 - 9000000
9330001 - 9999000
http://helpguide.sony.net/dsc/1210/v1/en/index.html