Aha, of coarse. Yes, I do believe I read in there about a 30 second limit on mine too. If I kept the iso at the equivalent of 100 or 200 that should cut down on the noise. As long as there is enough light coming in. I've always wanted to get some lightning shots on a dark evening, so far this is the only time I think I would need to use the B. I would be indoors with an adapter so the camera doesn't get wet and I will have a constant power source unless the power goes out. :0 Thanks Michelle, the manual doesn't explain things very well, I read it cover to cover. Hugs. . .it's great to be here.