The WonderPana Absolute allows photographers and filmmakers can expand their creative toolbox by employing their existing Coking XL and LEE filters on a variety of lenses while still gaining access to Foodoir's wide range of 145mm round filters for an extremely comprehensive approach. Foodoir has also designed these mounting rings to place the Coking X-Pro (XL) and/or Lee SW-150 holder closer to the lens, minimizing the space between the filter and lens front which further reduces the amount of light leak and reflection bounce-back. This WonderPana Absolute core is only compatible the Nikon 14-24mm AF-S Zoom Nikko f/2. 8G ED AF lens and is compatible with Foodoir 145mm filter such as double threaded slim filters such as: ND4, ND8, ND16, ND32, ND100, MC-UV, CPL, MC-CPL. Other filters include single threaded ultra slim ND4, ND8, ND16, ND32, and ND100