It always depends on it what the flash is required, as Aufsteckblitz for short shots in an event or celebration the optimum. I-TTL, like me NIKON, active, he does everything himself, but if I want to experiment with the exposure, shootings and light setups do, which is set fast times ne Qual. Since I am not an expert, I was only on my experience. The aperture setting is extra fine, one can achieve on manually, the perfect illumination.
Must first experiment more, the functionality provides tremendous to learn. Nevertheless, it is a 5 star product.