Quote: What exactly is Professional to you?
Those who behave as such (so attitude), regardless of make a living from it, and able to give consistent result.
I understand that my position will be certainly a minority but I think that even the most entrenched conventions should be questioned, in the end I think that each of us, in the most diverse fields, I have seen people who, while coming in perfectly canonical descriptions, aren't sufficiently good, on one or both the above points.
Instead about the endless discussion relating to equipment I think the a gear able to facilitate the job got obtain consistent result more easy matter and depending on the situations could be determinant, despite the photograph is an artistic field and modern camera has reached really high quality feautures.