So I am trying to get out of the auto mode and have been doing some studying, but I guess I need a little clarification. I have been getting some info on aperture and shutter speeds. I get aperture. I get that the lower the number equals the bigger the opening which lets more light in. Ok I think I also get shutter speed.....A faster shutter speed needs a larger aperture (1.4 for instance) and vice versa. So what exactly is a fast shutter speed? and what is slow? I understand the aperture numbers but haven't quite gotten this yet. Thanks for any advice!!!