I bought this to photograph a lunar eclipse, but never used it. It has been stored for a long time by a non-professional, so there may be scratches and dirt on the packaging. Please purchase only if you understand this. ND filter that adjusts exposure while maintaining color. - Size: 40.5mm - Brand: Kenko - Model: PRO ND-8 - Description: ND filters are used to adjust exposure without affecting color. Thank you for looking.