Two of us traveling to China as tourists. We have a fair amount of camera equipment (two canon digital cameras and several high end lenses all packed in a rolling camera bag). My concern is that we could look sort of 'professional' and worry that customs would question whether we are taking photos commercially. We not professional photographers but wonder if we need to worry at all about being viewed as such by customs officials. Any feedback or advice is appreciated. We are, of course, traveling on tourist visas.