A point and shoot is not the camera for taking pictures at a concert, the lenses are to slow to expect to take good pictures, you pretty much need a SLR for this. Lenses are listed like 80-200f4.5-5.6 . The smaller the F-number the faster the lenses, and most zooms have a variable F-number, Faster at the short end and slower at the long end. I belive the pentax camera your talking about has an f-numer at the long end like13, very slow esp. indoors. It mainly comes down to budget, Inexpensive Zooms start about $100 and new autofocus Cameras Start about$200. I have seen a Canon rebel X with 35-50 and 80-200zooms for less then $300 at walmart, but I haven't looked lately. hope this helps todd