Fotodiox Pro 145mm Circular Polarizer (CPL) Filter - Pro1 CPL Filter (works with WonderPana 145 & 66 Systems)
This filter from Fotodiox Pro is a double threaded circular polarizer (CPL) filter made of optical glass and featuring a rotating ring to allow for light ray selection. Remove unwanted reflections from non-metallic surfaces such as water or glass. CPL Filters are used to select which light rays enter your camera lens. CPL filters can also be used to saturate colors and to provide better contrast. The effect can be seen through the cameras viewfinder and changed by rotating the filter ring. The filter factor varies according to how the filter is rotated and its orientation to the sun or light source(approx. +1.3 stops). Typical applications include darkening skies, water reflection elimination and window/glass/eyeglass reflection elimination. CPL filters are specifically designed for use with auto-focus SLR cameras (They will also work on manual systems and video cameras without problems). This filter is made specifically for the WonderPana 145 & WonderPana 66 Systems.   The filter will not fit directly on the lens, a WonderPana filter adapter is required for use.