The TTArtisan 11mm fisheye is a relatively new lens designed for full frame mirrorless cameras, producing an image with 180 degree diagonal field of view.  This test was shot with a Sony A7r camera at 3 x 2 EV bracketed exposures: 6-around down 30 degrees + 3-around up 45 degrees + nadir. Developed in Lightroom with chromatic aberration correction but no sharpenening or other enhancements.  Stitched and tone mapped with PTGui Pro 12.