Hi I am completely a beginner. I have had a Nikon d3100 for years always used on auto mode. Now I am hoping to pursue a career in studio portrait photography. I am starting a course in September and have just purchased a Nikon D7100. I would really appreciate some advice on a good all round lenses and a lenses for specifically portraits or a good two in one! To really start me off. I do not know where to start... The thing is because I am just starting out, I do not want to have to buy more lenses once I start my course I would like something that will allow me to go strait into my amateur shoots. Any help advice on studio set up and especially lenses is very welcome.