Thank you for viewing. This is a Kenko protective/color correction filter. The filter diameter is 52mm. It corrects the blue cast in shadows under sunlight, and because the effect is quite subtle, it can be used regularly as a protective filter. There are no noticeable scratches or peeling of the coating, but there are some wiping marks from use, which do not affect actual use. Please see the images for details. I am also listing filters of other diameters, so please take a look if you like. I will offer a small discount for combined purchases. If you have any questions, need additional images, or anything else, please feel free to comment. #kenko #kenko #kenkotokina #filter #protector #protectfilter #protectivefilter #skylight #52mm #Φ52