If I don't count internet expenses then zero. And I don't like to click photographs so no special camera required. People stare like I am an alien so I don't click. Occassionaly from running train I will click but I hav decided not to click pic of train standing at PF or train passing through Level Crossing. Recently I was clicking my coach of 22846 Hte-Pune SF at Nagpur and people were like " Pagla gaya hai kya?", Train ka photo kyon khich raha hai? They don't say but stare at you and also talk and laugh among themselves and at that moment you understand that you hav become a cartoon character for them. So better shut down your mobile/camera and leave that place. Thats best for me.