The Micro 4/3 system has really grown up in the last year. Sensor tech has taken a substantial step forward and the lens lineup has rounded itself out very nicely. Much has been eluded to regarding the origins of the OM-D E-M5 sensor, is it a reworked Panasonic sensor, a Sony sensor, an inhouse super secret sensor??? Oly came out and admitted that Sony is the manufacturer of the sensor in the OM-D E-M5 quelling the rumor mill, and of course, the G3/GX1 (and quite possibly the soon to be G5) sensor, built by Panasonic, is in fact different. That all said, I really wanted to see how these two sensors compared to one another as I have been very impressed by the G3. C’mon in and we’ll take a closer look at a few files.