New 0.35x 55mm High-Grade Fisheye Converter for Sigma 55-200mm f/4-5.6 DC Zoom

0.35x high-definition digital conversion lens for 55mm—designed for use with Sigma Zoom Normal-Telephoto 55-200mm f/4-5.6 DC lenses. Built with a steel barrel for solid durability and fitted with multicoated optical glass to minimize flare and ghosting. The unit is infrared compatible. Includes a detachable macro attachment: remove it to use as an extreme close-up adapter, or leave it attached to produce the fisheye effect.