Our latest test scene is designed to simulate both daylight and low-light shooting. Pressing the 'lighting' buttons at the top of the widget allows you to switch between the two. The daylight scene is shot with manually set white balance, but the camera is left in its Auto setting for the low-light tests.
The a6000 produces some very impressive image quality - at base ISO it matches the Nikon D5300 for resolution. This puts it quite some way ahead of the Fujifilm X-M1, the Canon EOS 700D/ Rebel T5i and the Olympus OM-D E-M10.
At higher ISOs, the a6000's context sensitive noise reduction applies more noise reduction in areas it thinks shouldn't have detail. This works well in some circumstances, but can also get things a bit wrong, with a damaging effect on detail retention.
In low light, the a6000's Raw performance is a fraction behind that of the Nikon D5300, and not that different to the Olympus E-M10, even when compared at common output size. It's only at the highest settings that you start to see the advantage of Sony's greater sensor size.
The high ISO performance is similar to the Canon EOS 700D, though we'd expect the Sony to have more dynamic range (and hence latitude for processing) at low ISOs. The Fujifilm X-M1 has less noise at any scale, thanks in part to the effects of processing the output from its X-Trans sensor design, but it also has lower resolution. It is able to compete in terms of detail, though.