At first I thought a cheap product is perfectly adequate, but I was wrong about huge! Use it though mostly only for protection. The Hoya HD there is no discoloration or edge distortion more like some cheap goods. This results in my opinion sharper in some situations and less veiled shots, I can determine no difference in the negative sense, no matter what requirements exist. It is the best filter I in my 20 years of photo career ever had! Use the UV filters in all my lenses (70-200mm f / 4 L IS USM, Canon EF 17-40mm f / 4L USM and 24-70mm f / 2.8L USM). It is even suitable for wide-angle (77 mm).
