My English is not as good as yours.I tried to describe my opinion.I knew that Professional Photographers like to engage with Photography site!!!!!!!Or should I go to field with my camera and start cultivation!!!!!Hmmmmm!I think I have to stay here long time till you understand the meaning of Professional Photographer!!!!
Let me tell you-Those who have chosen Photography as his/her Profession,are called Professional Photographer.
Example:Those who have chosen cultivation as his/her Profession,are called Farmer.