...and some conspiracy theories :smile: With the current revelations about a Sony sensor in the E-M5, and other developments in small SC, I was wondering if we would probably see a Mp explosion in the :43: world too. And what this would come to. The sensor in the Nikon V1, presumably also made by Sony, is 10.1Mp and has a pixel pitch of 3.4 micron. It is widely established (from both metrics and real life samples) that this tiny 1" sensor performs better in, e.g. high ISO, than the old 12.3 Panasonic sensor in all Pens and several Panys. Surprisingly better to tell the truth. And the estimated pixel pitch for the 12.3 sensor is 4.24 microns. This is in fact comparable with some APS-C sensors, like Canon's 18Mp one, and larger than the one in the Sony NEX-7. The sensor in the E-M5, has a pixel pitch of 3.22 or so (estimated from the dimensions). And we all know it performs beautifully at high ISO, also having great DR in general as well. All that goes to show that pixel size is no longer such a great issue with IQ and DR/ISO performance. Now comes the interesting/conspiracy theory stuff. The new Sony RX100 has a sensor with exactly double the pixel count of the V1 at the same size. Initial reports seem to indicate that its ISO performance is not up to par with the one in the V/J1. But "double the pixels" got me wondering. How are the two sensors related? Could it be that it is the same sensor tech? Could it be some technology that utilizes two adjacent pixels to act "as one" in some way, extending the DR? Highly speculative, I know. But the main message is, I guess, the possibility to see a >20Mp sensor in a :43: body is not that far away. Megapixel count has some value (apart from the marketing gimmick). It would give larger printing capability, but, more to the point, cropping facility for some applications. I could think candid situations, with sports and wildlife subjects. Combine this with newer zoom lenses and additional focusing capabilities (on sensor PD-AF?) and :43: may become more desirable in those photographic niches. More than that, I wonder whether future sensor technology would allow for something like "selectable pixel size". That way, you could have huge Mp count for lower ISO (for high detail and cropping ability) or lower count at high ISO (but much better noise performance). And let's not forget developments like Z-dimension sensors that have come a long way since the Foveon one.