Amazon.com : 62mm Pro Series Multi-Coated High Resolution Digital Ultraviolet Filter for Sigma 18-250mm F3.5-6.3 DC Macro OS HSM, Sigma 70-300mm f/4-5.6 DG OS Lens, Sigma 18-200mm f/3.5-6.3 II DC OS HSM
40.5mm UV Filter for Canon, Nikon, FujiFilm, Olympus, Panasonic, Penta – Big Mike's Electronics
Sigma 62mm WR UV Filter AFD9B0 B&H Photo Video
Sigma 62mm DG UV Filter 35mm SLR DSLR film Digital | eBay