Canon EF 16-35mm f/4L IS USM with 2x 4-Element Teleconverter (Bayonet Mount) + Nw Direct Microfiber Cleaning Cloth

2x (doubler) bayonet-mount teleconverter built with a 4-element optical design. When attached to a suitable lens it multiplies focal length by 2x while keeping resolution and contrast at a high level — ideal for extending reach on quality optics without sacrificing image performance.