Charter Boat Snorkeling in the Florida Keys

Need to get the entire small boat in the frame while you are in the boat? This task is no problem for the Canon 8-15mm f/4 L USM Fisheye Lens. Removing my left arm from the picture in post was much more difficult - thanks to the transitioning black circle. I used Photoshop to copy and flip an area of the right side to paste over my arm. I then used a soft eraser to remove the copied portion that was not needed. Yes, it would have been easier to remember to keep the arm out of the frame in the first place, but the issue is not unexpected when using this lens.