Pay Attention! Sometimes, no matter how hard one tries, the Stars In Their Courses will work against you. This shot, had it been properly framed, would have been a worthy effort.
W.Kamau Bell, a local author and stand-up comic, was the guest speaker at a fund raising event. In the past, I arranged to attend the pre-event book-signing party so I could have a few minutes to introduce myself to the subject, and suggest some possible approaches to the photo. I told him that after I made the expected "picket fence" photo with the event sponsors, I want to make a shot of him, coming towards the stage, with the audience applauding in the background. Surely, my 17-35mm Nikkor at its widest setting would give me enough coverage, and I had a convenient grey wall behind me to bounce my shoe-mounted speedlight. By adjusting the camera to a moderately small aperture and a moderately long exposure, I hoped I could get a frenetic, blurred audience and a sharply rendered comedian getting ready to take the stage.
When the moment came, Mr. Bell stood up and literally leaped towards me and the stage. When I brought the camera to my eye, it was apparent that his left hand was not in the frame. Without enough coverage, the concept of the shot was lost, so I grabbed this shot, just to have a record of my newest misstep.
Crop Factor: Here's the problem - a 17mm lens would have be fine on a full framed body. But mounted on a body with an APS sensor, I get an angle of acceptance equivalent to a lens with a focal length of about 25mm, which was obviously not enough to get the job done. That's exactly what happened, and I have nobody to blame but myself.
Corollary Misstep: A while back, I did the exact opposite: I mounted an APS formatted wide angle lens on a full-framed body. The result was this pseudo fisheye shot that isn't distorted at all, just round. Right after I made this shot, the problem was obvious, a matching the lenses to their appropriate bodies fixed everything. Again, APS lens on full frame body. The problem is obvious. However, the photo would still be usable, once the curved areas in the corners were cropped out, and you have enough pixels to render a good image.