Thank you for viewing. This is a Kenko filter. The size is 82mm. I used it once for portrait photography after purchasing it new. I believe there are no scratches or stains. However, I may have overlooked minor dirt and such from normal use. Please understand. This is No. 5, so it's a user-friendly filter with a moderate effect compared to No. 1. There are various black mist filters from different companies, but I personally recommend this Kenko one because the logo on the side of the filter is nice and it has a luxurious feel. It's a beautiful item, but please understand that it is used and that I am a non-professional in my inspection.