Photokina is just about getting started over in Germany today, and Pentax has grabbed the opportunity to unveil its next K-series shooter nice and early. The new K-5 looks exactly as a leak earlier this month suggested, meaning it's an almost identical brother to the K-7. Of course, the big changes are taking place within, with a new 16.2 megapixel CMOS sensor -- said to be equivalent in performance to the one in the
