Wide Multi Coated Circular Polarizer
The only filter that darken the sky in color photography without affecting color
balance, polarizing filter cut out the glare from water and non-metallic
surfaces and allow shooting through glass windows. Sigma Multi-Coated circular
polarizing filter designed for use with AF SLR and MF SLR cameras. The
multi-layer coating reduce reflection.
* Wide multi coated circular PL filter does not have thread on the front filter