Traditional Culture Encyclopedia - Photography major - What is the significance of ND mirror (medium gray density mirror) in photography?

What is the significance of ND mirror (medium gray density mirror) in photography?

1, another name of the medium gray-scale mirror is neutral gray-scale mirror. Its main function is to prevent overexposure, filter light when shooting, and filter evenly when filtering. There is no selectivity, but it only weakens light and does not affect the color of the subject.

2. This density mirror has a variety of densities to choose from, and can also be used in combination with multiple lenses.