The WonderPana System is a groundbreaking Lens Hood Filter System available for many Super Wide Angle (SWA) & Ultra Wide Angle (UWA) Lenses on the market today. The WonderPana System allows the use of round UV, Circular Polarizer and ND filters on SWA and UWA lenses. Round filter designs prevent the typical glare and unwanted reflection issues inherent in other designs. The Metal Hood and dedicated snap-on lens cap of the WonderPana System provides excellent protection for your valuable lens investment(s). The WonderPana is ideal for Panorama, Nature, Architectural, Fashion and Event photographers and is an invaluable asset for Analog and Digital Filmmakers alike. This Upgrade Bracket allows the WonderPana145 to be upgraded to the WonderPana 66 System, which will allow for the use of the industry standard 6.6x6.6” square from Schneider as well as the Fotodiox Pro 6.6x8.5" rectangular filters.