I needed for my Nikon D5100 greater flash power than the built-in flash. This flash is very small, handy and absolutely in plugged state not a hindrance. Flash shooting in large rooms are no longer a problem. He can of course not replace a "large lightning" but who must not make professional recordings, making it very well-advised. This flash adjusts the camera settings to my D5100, just like the built-in flash, automatically.