Optical lens manufacturer - Lens distortion is actually the general term for the inherent perspective distortion of optical lens, that is, the distortion caused by perspective. This distortion is very detrimental to the image quality of the photo. After all, the purpose of photography is to reproduce, not exaggerate. But because it is the fixed characteristics of lens (convex lens converges light, concave lens diverges light), it cannot be eliminated, It can only be improved. The high-grade lens optical design and materials are exquisite. The perspective deformation can be reduced to a very low degree by using the optimized design of lens group and the high-quality optical glass (such as fluorite glass) to make the lens. But it is impossible to eliminate the distortion completely. At present, the highest quality lens is tested under extremely strict conditions, and it will produce varying degrees of deformation and distortion at the edge of the lens.
