The m4/3 E-M5 came out in early 2012 and the FF A900 came out in late 2008, so in only 3.5 years that is amazing progress! The much smaller m4/3 sensor is better in many ways than the much bigger FF sensor. Both are Sony sensors.bakubo wrote: The Olympus E-M5, E-M10, E-M10II, E-P5, etc. that are 16mp have the same Sony sensor. Just very minor tweaks of the sensor and processing along the way, but I imagine DxO would show them pretty much identical. The PEN-F has the newer Sony 20mp sensor. Panasonic, mostly, uses their own Panasonic sensors, but in the last few years they seem to be as good as the Sony sensors used by Olympus. Panasonic also has 16mp and 20mp sensors that are in current use.
By the way, several months ago in another thread I conducted a Turing test on one of the posters that sometimes appears here and it was clear it is a bot (there are troll bots, spam bots, etc.) and not a person. They are easy to spot even without a Turing test. No name, no location, no photos, carefully avoid giving any information that indicates a real person, not starting any threads, contributing pretty much nothing, etc. Only sniping and fanboy posts.