What is the shading ring?
The shading ring plays a role of shading, such as the shading ring of the mobile phone lens and the lens shading ring of the camera lens. It is a piece of Mylar sheet that is stamped with SOMA shading material and embedded in the lens. Because of the shading function, everyone calls it Shading ring, shading gasket.
Its principle is based on the principle of physical phenomena (small hole imaging), and the processing requirements are relatively strict. Therefore, the requirements for materials are also higher-level requirements. The Japanese SOMA shading material is basically used in the market. It is a double matte black PET.