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.
Under the tungsten lighting of our low light scene the GM1 tends to wash out some colors,in an attempt to correct for the yellow glow. also take on more of an orange tinge under tungsten lighting, but the E-P5 compared here does worse at default settings (there's an option to correct this in the camera). Fine detail is rendered acceptably but after that noise takes a serious toll on resolution.
Theis current class-leader in terms of JPEG noise reduction, and indeed it outpaces the GM1 here. Upwards from there at provides a real challenge to both mirrorless cameras, pushing some shadow detail into the black channel and leaving the whole scene with a splotchy 'watercolor' look.
We'd expect to see slightly more noise from the GM1 than an APS-C competitor like the Sony NEX-3N andshows that is the case, but not by a lot. Moving up to the GM1 shows stronger color noise than the Sony camera. At both cameras show a lot of noise as expected, though the 3N still looks to have a slight edge. The GM1 does, as expected, outperform the in terms of Raw noise.