Amazon.com : (2 Pcs) 52-77MM Step-Up Ring Adapter, 52mm to 77mm Step Up Filter Ring, 52 mm Male 77 mm Female Stepping Up Ring for DSLR Camera Lens and ND UV CPL
Amazon.com : GREEN.L 52mm Infrared Filter, Multi-Resistant Nano Coating HD 52mm X-Ray IR 720nm Filter for Camera Lens : Electronics
Amazon.com : Fotga Black 62mm to 52mm 62mm-52mm Step Down Filter Ring for DSLR Camera Lens and Neutral Density ND UV CPL Circular Polarizing Infrared Points Star Len Filters : Camera Lens
Amazon.com : ICE 52mm UV IR Cut Filter Optical Glass Multi-Coated MC 52 : Electronics
Filtro a infrarossi IR720, 52 mm, 52 mm, IR 720 dHD, filtro passo-passo digitale : Amazon.it: Elettronica
Amazon.com : ICE 52mm UV IR Cut Filter Optical Glass Multi-Coated MC 52 : Electronics
Amazon.com : ICE Infrared 3 Filter Set 58mm IR 760 850 950 58 Optical Glass Slim : Electronics
Amazon.com : (2-Pcs) 52-58MM Step-Up Ring Adapter, 52mm to 58mm Step Up Filter Ring, 52 mm Male 58 mm Female Stepping Up Ring for DSLR Camera Lens and ND UV CPL Infrared
Amazon.com : Fotga 52mm Six-in-One Adjustable Infrared IR Pass X-Ray Lens Filter 530nm to 650nm 680nm 720nm 750nm : Electronics
Amazon.com : NiSi 100X100mm Square Neutral Density Filter,IR ND64(1.8), ND 6 Stops 100mm System Optical Glass for 52mm,55mm,58mm,62mm,67mm,72mm,77mm,82mm Lens,Compatible with Lee Cokin Hitech Singh-Ray : Electronics