AYO! Im studying photography at uni and ive got to do some stuff about studio lighting and loads of stuff that i dont know. unfortunately im too poor to pay my book deposit so i cant use the library blah blah etc so if anyne could help me out with some of this stuff id be v, grateful. a summary of the main types of portable flash what guide numbers are and how they are relevant red eye reduction(!?) and leaf and focal plane shutters] PLEASE HELP ME!