Amazon.com : Hoya Pro ND Kit (8/64/1000) 58 mm, Practical Set with 3 Different Hoya PRP ND Filters for Light Reduction, Neutral Density Filter, ND Filter, Long Time Lighting : Electronics
HOYA 49MM FOG SET A,B FILTERS : Musical Instruments - Amazon.com
Amazon.com : Hoya 49mm Eight Point Cross Screen Glass Filter (8X) : Camera Lens Effects Filters : Electronics