An essential tool for extreme sports and dramatic action shooters. The 0.4X Pro Fisheye Adapter offers an extreme fisheye effect and a high degree of barrel distortion. It exaggerates depth by pulling nearby objects closer and causing distant objects to recede into the background. Advances in high-index / low-dispersion optical glasses new barrel materials and exotic anti-reflection coatings along with the latest in computer-aided-des ign / computer-aided- manufacturing are combined to produce lenses of unprecedented quality. Diamond-cut from crystal-clear water-white optical glass Opteka lenses are ground and polished to a precise precision. Because all Opteka lenses are designed and manufactured with the highest possible degree of consistency you can swap lenses mid-shoot with no... Less

Century Optics Fisheye Adapter produces an extraordinary degree of barrel distortion with a magnification factor of approximately .45X. While extreme telephoto shots tend to flatten the subject against the background, the Fisheye exaggerates depth, pulling nearby objects closer and causing distant objects to recede into the background. It is a non zoom attachment, sharp focus is achieved by setting your zoom to the widest angle and adjusting the macro button on the zoom lens. Comes in Century Optic's popular Bayonet Mount that attaches with a twist to the front of the lens. No vignetting, not even at full wide in underscan.