Bill, I hate to be the bearer of bad tidings, but the SX50 sensor is not 1/1.7" as you posted. The bad news is that it is even smaller than that! Yup, it is the smallest teeny tiny little green box size at the very bottom of your graph @ 1/2.3 as are all "super zoom" cameras.
Bill Houghton wrote:
The SX50 - For what you get is well worth the money, but it does lack in many ways compared to a DSL, Low lite limitations for one. But as I mentioned for the Sensor size it does not have the zip of a larger DSL sensor. Remember it's only 1/1.7 inches, that is the little orange box on the graph. A great lens, a great snap shot camera.