Photography skills consultation, how does this dark light shooting work, and what lamp is used?

There must be light on the sunny side of the shoes. Just look at the light source and ordinary LED lights. The light source must be dim. Not very bright. Just illuminate the main body of the shoe. The background must stay away from the subject. The room is as dark as possible.

The aperture is about 5. Set up a tripod to adjust the shutter. Adjust slowly from the exposure 1 sec.

Because the aperture and shutter need to cooperate. So it's hard to say what the aperture must be

For example, if you have an aperture of 1.8, then the shutter speed of 1/3 seconds may be equal to the shutter speed of 1 second, so you need to adjust it.

Few experts can directly look at the light source to give an accurate aperture and shutter ratio.