Promaster 40.5mm Circular Polarizer - Digital HD bf24 3 DG DN OS Sports

3 DG DN OS Sports Lens from Sigma offers the features and image quality that professionals demand

Length adjustable ball and socket construction

The new Series IV technology extends the line-of-sight operating range of the Wireless GO II to approximately 656' compared to the 230' maximum range of the original Wireless GO

Button-less retractable design maintains a compact form factor when the lens is not in use

Promaster 40.5mm Circular Polarizer - Digital HD bf24 3 DG DN OS SportsProMaster DIGITAL HD CIRCULAR POLARIZING FILTERS increase color saturation and reduce reflections. The neutral gray HD polarizing material guarantees excellent images while minimizing loss of light. Constructed with premium Schott optical glass these filters are designed to yield extreme image sharpness. They also feature a precision machined, super slim aluminum frame with anti reflective matte finish and knurled edges.