I was hesitant at first, I had just bought a 580EXII which has replaced my old Metz flash on my 50D. But whenever I (right) have flashed, the man looked more pale and white out. Since I use the diffuser, the issue has done, you can leave the almost always on the lightning strikes and flash directly and there is a wundershönes soft light. Of course, I also know that the 580EXII a reflector disk has but if you still need more soft light that is the perfect complement.