High Iso, Good Zoom What Kind Of Digital Camera Should I Get?

What kind of digital camera should I get? - high iso, good zoom

I go to concerts much, so I need something with a good anti-shake video decent optical zoom and high ISO. Another important element should be able to fit in your pocket. I had a Casio Exilim 10.1MP with 3x optical zoom and found that the MP has taken up that I thought it would. I'm not really worried much about the cost, because you will not be replaced within one or two years. We examined several different shops, but not really a big impression on me. Thank you!