In my course of photography this year i learn how the sutter speed can make a huge difference in a picture. That if it is slow enough you can make light paintings. Which i found to be very interesting , also how the light is self can make a pictures be amazing and mysterious or just blank. That if you want a great photo the lighting must always be correct, sometimes the light isnt the way you want it ,but the photo will come out different a good type of different or bad. That is what i learn in my course this year and i will never forget it