Amazon.com : ND8 (Neutral Density) Multicoated Glass Filter (58mm) for Nikon D40x : Camera Lens Neutral Density Filters : Electronics
Zykkor Macro +10 filter FOR Nikon D40 D50 18-55mm 55-200m Camera Lens US Seller! | eBay
Fotodiox P645-NikF-Pro-NDThrtl Vizelex ND Throttle Lens Mount Adapter - Pentax 645 Mount SLR Lens To Nikon F Mount SLR Camera Body with Built in Variable ND Filter - Walmart.com
NDX HD 52MM FILTER FOR SOLAR ECLIPSE FOR NIKON D40 D50 D60 D70 D80 D90 D5000 | eBay
Nikon D40x Kit 10.2-megapixel digital SLR camera with 18-55mm Zoom-Nikkor lens at Crutchfield
Nikon D40 DSLR Camera Body, Black {6.1MP} at KEH Camera
Amazon.com : Nikon D40x 10.2MP Digital SLR Camera with 18-55mm f/3.5-5.6G ED II AF-S DX Zoom-Nikkor Lens (OLD MODEL) : Electronics
55mm Nd2 Nd4 Nd8 Neutral Density Filter Lens Set + Lens Hood For Nikon D7500 D7200 D5600 D5500 D3400 D750 With Af-p 18-55mm Lens - Camera Filters - AliExpress