This is a NISI 67mm Black Mist 1/4 filter, which adds a soft atmosphere to your images. - Brand: NISI - Model Name: Black Mist 1/4 - Size: 67mm Thank you for looking. I purchased this as a used item in good condition, but I haven't used it much, so I'm selling it. I think this is a fun filter for those interested in creating a film-like, retro atmosphere. There is a very small scratch of about 1cm that can be seen with the naked eye. I don't think it will affect the image quality, but please be aware of this.