In our second launch video for the WonderPana FreeArc, a filter system for your favorite DSLR Ultra Wide Angle Lenses, we take a closer look at the 145mm and square filters available for the system, as well as some special launch deals. The WonderPana FreeArc Basic Kit contains the filter system holder, the square filter brackets and the lens cap. The WonderPana Free Arc Essentials Kit includes the filter system holder, the square filter brackets, the lens cap, the 145mm Circular Polarizer (CPL), and your choice of the Graduated Neutral Density 6.6" x 8.5" Filter.