Excuse me, how was this photo taken and polished?

You use a macro lens, and the larger aperture leads to the smaller depth of field, so some parts are clear and some parts are blurred. Try f 16.

This kind of work can be done in a small studio, as long as the lights in all parts are equal. You are a Canon camera, the dynamic range is already very low, and it is not beneficial to improve the dark part in the later stage, so even light distribution is more important. If you want a high dynamic film, you can also shoot three films with different exposures (+1~2/0/- 1~2), and then do HDR post-synthesis in PS.

You're shooting metal. Metal objects cannot be reflected by polarizers. You can only adjust the angle of the light source, bit by bit, until the reflection you see in the viewfinder can be taken again.

It is very important to shoot product films with tripod and cable, because most product films use small aperture and low ISO, so the shutter speed must be slow. (After the training, press and hold the safety shutter for at least 1/85 seconds, that is, press and hold the shutter between heartbeats, and at the same time press and hold the screen to breathe, so that no muscle tremor occurs. Ordinary people at least1125 seconds, below this speed, you must use a tripod)

Professional cameras can't provide built-in post-stage, and the built-in post-stage can't meet the requirements of product post-stage, so you have to learn the post-stage of product photography to achieve the desired effect. PS software is commonly used in the later professional period.