Mattebox kit with 15mm lightweight support, works well with Zeiss CP2’s and Canon EF lenses. Features a Quick-Lock mounting system that attaches directly to the front lens barrel. This mattebox accommodates 3×3″ through 4×6″ filters and works with most wide angle lenses in both 4:3 and 16:9 aspect ratios. Although the MB-255 can be used as a clip-on mattebox, we recommend the use of 15mm bar support.