HDStars 95MM Multi Coated Circular Polarizer (CPL) Filter For Tamron 150-600mm, Bower, Rokinon, Samyang, Vivitar 650-1300mm Telephoto Zoom, 500mm F/6.3 Mirror (T-Mount) Lens Removes unwanted reflections from non-metalic surfaces such as water and glass Creates dramatic sky/cloud contrast Saturates colors without changing color balance Designed for split-beam metering systems used in most auto focus cameras 95mm diameter