I'm trying to build up a bit of a kit for my new G5. I have the 14-42mm kit lens that came with it, and the Panasonic 45-150mm that came as part of the overall package. I picked up the Sigma 19mm f2.8 because I ran into a good deal on it. I am also thinking of buying the Sigma 30mm f2.8 as well, but I'm not sure if I actually need it with the lenses I already have. My thoughts in favor of adding the lens is that at f2.8, the Sigma is faster than the kit 14-42mm at 30mm, and that it might make a good choice as a portrait lens. Does it seem like overkill to pick it up as well? I just don't want to add a lens that is just going to end up sitting in my bag. I know this question falls a bit into personal taste and preference, but I was just hoping for some feedback so that I can make a decision one way or the other. Thanks!