Imagine, if you will, a hall full of 2000 people, and someone takes a picture of the orchestra and choir together at the moment of the ovation.
One face is turned toward the camera, like Robert Walker at the tennis match in Strangers on a Train. Guess whose?
No, wait a minute, that's no good.
Zoom in 30 percent. Enhance. Zoom, enhance. Zoom. Rotate, recentre, enhance. That's better.
Cleans up nicely innit.