BRG (Black Rimmed Glass) Reduces the chance of light reflecting off the edge.. Advances in high-index / low-dispersion optical glasses, new barrel materials, and anti-reflection coatings, along with the latest in computer-aided-design / computer-aided-manufacturing Greatly reduces the appearance of lens flare and ghosting caused by reflections BAB (Internal Black Almite Barrel) Black matte satin finish which reduces reflections. It exaggerates depth by pulling nearby objects closer and causing distant objects to recede into the horizon. The 0.33x Super Fisheye Adapter provides an extreme fisheye effect and a high degree of barrel distortion without vignetting
