Very good UV Filter Sigma DG 86mm Multilayer as usual by the brand. Warning it is not a slim like other smaller dimensions. But that does not matter since it is protective filter on my telephoto zoom lens Tamron 200-500. As supporter of UV protection filters, multilayer filters UV (DG for we now cover DiGital) Sigma perfectly fulfill their roles at reasonable prices. This range of Sigma team to various diameters and protects all my objectives park. This already saved me quleques lenses before and also greatly facilitates cleaning after an exit.
