content: Had my little boy break the first one of these. Saved the lens. I have had the filter in one condition show some lines with light at a certain angle but it was inside so I just removed the filter in that condition. Not sure if the higher quality filters would not have had that or not. But in regular outside use, it has always worked well. Has good construction even with somewhat harsh treatment that my camera gets. Bought a second one after the first one broke after a good drop.