As expected, the Sony NEX-6 produces a strong performance, in its segment, on par with the other Sony models using the same sensor. The choice between the Sony NEX-6 and the NEX-5R will come down to budget and camera features rather than performance – if a built-in flash and electronic viewfinder is important to you, then the NEX-6 is the better choice. If not, then from a performance point of view, there is no perceptible difference between it and its cheaper brother the NEX-5R.
When comparing the NEX-6 to competitor cameras, the ability to now lower the ISO sensitivity to ISO 100 is the main reason for the performance gain.
Moving forwards, while Sony currently holds the performance high ground in the Compact System Camera arena, the Olympus OM-D and Pen models show that other manufacturers are catching up, even with the smaller 4:3 sensors that have traditionally performed less well.