*Ideal for short focal length zooms or prime lenses that are prone to vignetting with standard filter mounts.
*Made for B+W Clear Protection Filters, UV Haze Filters, Käsemann HTC Circular Polarizing Filters & ND Vario Filters
*Thin design—ideal for wide-angle lenses down to 17mm with a full frame DSLR
*Front thread for additional accessories, snap-in lens cap
*Exclusive MRC nano coating for the highest demands