The Century HD .3X Ultra Fisheye. This high-performance optic features dramatic HD optics and a lens-saving front shade/protector assembly.
The HD .3X Ultra 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. On the Canon, the .3X Ultra Fisheye Adapter yields a horizontal viewing angle of 130° (180°, measured diagonally). With small digital HD cameras and the Century Fisheye, capturing extreme action shots is dramatic and practical. With its almost total depth of field and unmistakable style, this adapter is a must for action sports shooters. "