Hi, I'm new here, I'm about to buy a flash for my digicam, I was thinking to buy a 2500HS but I don't know if the AF assist lamp would work and how much is really the range of that flash (max aperture for the Z3 is f/2.8). I usually take photos at a club at night, I can't see a thing but i use manual focus. The problem comes when I try to take photos of the crowd or the DJ, they turn out too dark.