What Is a Circular Polarizer?
A circular polarizer is a device used to eliminate polarization in specific directions of light.
Primarily used as an accessory for optical equipment and cameras, it reduces reflections from surfaces such as glass and minimizes glare, enhancing the transparency of landscape photos and translucent objects. It can also reduce reflections from water surfaces and glass windows while emphasizing the colors and contrasts of subjects.
Circular polarizers have a circular shape, with gear-like structures or ribs arranged around the filter. A special material is coated on the surface of the filter, allowing only specific light to pass through. By rotating the filter, the direction of polarization can be adjusted.