I've got the kit lens, 18-55mm and the 55-210mm, neither of which has a suitable aperture for low-light photos, which I've been trying to do in a badly lit jazz club. So far I haven't been able to track down a faster alternative. I would like to find a fixed lens of say 100mm with a wider aperture than the zoom lenses. This a bit of a minefield for me. Can anybody please suggest lenses I could look at? thanks.