Ideals do not reflect the light lens protector, you can see well that looks like or and this filter doesn't look good from the front in coating effects filter is not installed lens of low reflectivity. So have thin frame filtering companies have put a lens cap can be about 0.5 mm clearance between filter frame and caps such that Marumi filter is same thin frame type safe, not a can. In an interview in lens manufacturer's engineers are "balls of the lens is delicate. Do not stain, touch is basic, so do not touch directly with filters "and had to say. Can replace filters at any time, no balls are easily replaced. Filter said that accessories are important for sustained performance.