6.6 x 6.6" Ultra Circular Polarizing Filter Domke The 40-inch double-riser shaft is

The 40-inch double-riser shaft is outfitted with unique ergonomic locking tri-knobs that offer a firm grip and secure hold

and helps to ensure clean

This filter has a grade of 1/2

Light-red filter provides the same effect as a Wratten 23A contrast filter

3 density provides a 1 stop reduction in light from entering the lens

6.6 x 6.6" Ultra Circular Polarizing Filter Domke The 40-inch double-riser shaft isThe Tiffen 6. 6x6. 6" Circular Ultra Polarizing Filter is a wonderful filter designed to bring significantly more "snap" to your images. If a traditional polarizer doesn't give you enough "zip", the "Ultra" polarizer gives you a little more. It will bump up your blue skies even more making the difference between a good photo and a great image. Light rays which are reflected become polarized. Polarizing filters are used to select which light rays enter