How about the Seven Craftsmen lens?

Seven Craftsmen Lens is the work of Shenzhen Seven Craftsmen Optoelectronic Technology, which is a new lens research and development manufacturer. As a domestic lens, it has the advantages of good center sharpness, soft glare, good feel and comfortable damping. However, as a product that comes from behind, it is still not satisfactory in many aspects, such as the extremely serious bend and the unusable corners. This problem has been alleviated, but it will not be completely eliminated. Taking scenic photos is not recommended. The contrast is reduced and there is no obvious ghost.

In film and television, the lens has two fingers, one refers to the optical components used by film cameras and projectors to produce images, the other refers to the continuous picture taken from power on to power off, or the fragment between two editing points, also known as the lens.