Macro Lens

It's long exposure photography or light painting i am using a black cloth for background and lens for the main subject . for creating this type of beauty , i have used a little light to circular behind the product when i did my camera setting in manual mode like shutter 6 sec , iso 100 , ex- -0.2 and the focus is locked then i get this type of photos materials are :- Black Cloth Device (realme 8 5g) product light stand