One of the first things I read about lighting was to not use the pop up flash on the camera. So I got an SB-600, and started bouncing it. Photos definitely got better. Then I read that I should get the flash off axis. Which I did. And photos got better. Then I read I should diffuse it. Which I did. And photos got better. Then I read about ring lights, which puts the flash back on the camera, on axis, undiffused. Only the good ring lights cost $$$ The only difference I can see is the wrap around the lens, which, at distance, I can't imagine is all that much different than just an sb600 mounted on the camera itself. Both sources would be relatively small compared to the subject (person). So, my questions is... Why does a ringflash produce a result that people like, and an on camera flash does not?