[KeithB]

Yes, I agree with Don, there are no rules. do what works for you. The theory is to crop in camera because if you crop in software you are doing what you should have done when you composed the shot in the first place but it's only a theory and as has been mentioned there can be a dozen reasons why it isn't possible to get it right when you shoot. It's nice to have the safety net of post production to fall back on.

I try very hard to get the crop right in camera, sometimes it works, sometimes it doesn't. An awful lot of my 'keepers' wouldn't have been without the trusty crop tool.