Studio Comparison (low light)
The low light scene is shot with Auto White Balance, to show how the camera's JPEGs look under artificial light. Any 'keep warm tone' options are left at their default setting.
The low light scene Raws are processed to demonstrate the capability of cameras in low-light shooting situations. Noise reduction is minimized and the white balance is neutralized to reveal blue channel noise. The black level is lifted to prevent noise being hidden by clipping. A standardized amount of sharpening is applied in Photoshop.
The first thing to notice when viewing the low light test scene at ISO 200 is that the GX7 has a slight yellow cast, though it's not as pronounced as on the Olympus OM-D EM-5, which preserves warm tones by default. By the time we reach ISO 800,and are starting to get smudged. At ISO 3200, the GX7 doesn't hold onto quite as much detail as the , and is just a bit better than the and . While the GX7 still has a fair mount of detail left at , those photos are best suited for .
As you'd expect, Raw images are noisier than their JPEG counterparts, as no noise reduction is being applied (by the camera or ACR). When you reach ISO 800, you'll see thatcompared to ISO 400. Even so, the GX7 holds its own against the , , and . While chroma noise is visible at ISO 3200, its becomes one stop higher. If you flip through the DMC-GX7's peers at higher sensitivities, you'll see that they all perform fairly similarly in terms of color noise.