Review on VIOFO Filter Cover Camera Lenses by Craig Mcdonald

Excellent quality. It's not plug and play, make sure you know how to use it. If you get poor quality or no change at all when using a CPL filter (possibly due to a returned product), read below: First: Check which side of the lens changes dramatically when using the filter, use that side than the inward side the camera. (Only on both sides, so it's easy). Second: On the side of the lens you will see a red line indicating from the manufacturer to adjust. - Turn on the camera. - Using a microfiber or suede cloth for the glasses, hold both sides of the lens and rotate it in small increments (pay attention to the RED line) - Bring them close to the camera and observe the image quality on the display screen , while spinning. - Remember the position of the red line that gives the best results. Result. (My red line is right on the gap between the lens and the frame). Finally wipe clean and insert into the camera body.