NiSi Filter System for Fujifilm X100/X100S/X100F/X100T/X70 (Professional Kit) 6972949370053 | eBay
NiSi Black Mist 1/4 for Fujifilm X100 Series (Black Frame) | NiSi Optics USA
Amazon.com : Fujifilm X100 12.3 MP APS-C CMOS EXR Digital Camera with 23mm Fujinon Lens and 2.8-Inch LCD (Special Edition - Black) : Point And Shoot Digital Cameras : Electronics
Fujifilm FinePix X100 In-Depth Review: Digital Photography Review