What's the difference between a lens ring and a lens film?

Lens ring and lens film are two different concepts in photography.

The lens ring is a metal or plastic ring installed at the front end of the lens, which is used to block the stray light or side light of the light to improve the shooting quality. It can reduce the reflection, halo and chromatic aberration of the lens under strong light conditions. The lens ring can also protect the front end of the lens from collision, scratch and fingerprint damage.

Lens film is a kind of transparent film or coating, which is usually coated on the front of the lens to improve the performance of the lens. The lens film can increase the transmittance of the lens, reduce the reflectivity, reduce the scattering and interference of light, and improve the clarity and contrast of the picture. In addition, the lens film can also protect the lens surface from scratches and pollution.

Therefore, the lens ring is mainly used to block stray light, improve shooting effect and protect the lens, while the lens film is mainly used to improve lens performance and protect the lens surface. Their functions and functions are different.