Cokin Series P Circular Polarizer Filter $250 - $500 and power saving 12V phantom

and power saving 12V phantom mode

It uses a USB 2

the Aurora PowerXND 2000 filters are now available in eBay

The battery is included with the cameras and offered here as a spare or replacement part

Cokin Series P Circular Polarizer Filter $250 - $500 and power saving 12V phantomThis is the P164 Circular Polarizer Glass Filter from Cokin. It fits in the optional Cokin P Holder. Light rays which are reflected become polarized. Polarizing filters are used to select which light rays enter your camera lens. A polarizer helps make a blue sky bluer as well as making clouds stand out. It can remove unwanted reflections from non metallic surfaces such as water or glass and also saturate colors providing better contrast. The effect