58mm CPL Circular Polarizing Filter
Suitable For Any Camera Lens With 58mm Diameter
A polarizer is an optical filter that passes light of a specific polarization and blocks waves of other polarizations. It can convert a beam of light of undefined or mixed polarization into a beam with well-defined polarization. The common types of polarizers are linear polarizers and circular polarizers. Polarizers are used in many optical techniques and instruments, and polarizing filters find applications in photography and liquid crystal display technology. Polarizers can also be made for other types of electromagnetic waves besides light, such as radio waves, microwaves, and X-rays.
Light reflected from a non-metallic surface becomes polarized; this effect is maximum at Brewster's angle, about 56° from the vertical (light reflected from metal is not polarized, due to the electromagnetic nature of light). A polarizer rotated to pass only light polarized in the direction perpendicular to the reflected light will absorb much of it. This absorption allows glare reflected from, for example, a body of water or a road to be much reduced. Reflections from shiny surfaces (e.g. vegetation, sweaty skin, water surfaces, glass) are also reduced. This allows the natural colour and detail of what is beneath to come through. Reflections from a window into a dark interior can be much reduced, allowing it to be seen through.
It can be used with both auto focus and manual focus cameras and lenses.
* Fit SLR/DSLR/DC/Camcorder
* Double threaded, you can connect it to a lens hood or another filter
* Super High Resolution Filter
* High Quality Crystal Optics Filter
One CPL Filter
One Plastic box packing