67mm, 10 points. Highest quality protector filter. Protects your valuable camera lens without degrading optical performance. 【PRO1D Protector】 A lens protection filter designed with "digital design," employing the newly developed "Digital Multi-Coating (DMC)" and black ink processing around the glass. This is a high-quality lens protection filter at an affordable price, perfect for those seeking quality. It can also be used for film cameras. 【Features】 Ultra-lightweight and thin-frame type, ideal for wide-angle lenses. While the glass is the same 2mm thickness as standard filters, the frame has been thinned through advanced machining techniques. Despite the thin frame, a screw is provided on the front of the filter, allowing for the attachment of a lens cap. The filter frame features knurling for ease of handling during attachment and removal. Black ink processing is applied to the outer circumference of the filter glass to reduce internal reflections.