Here is another update about camera sensors in cameras as tested by DxO Labs (www.dxomark.com). DxO’s test essentially covers the noise and dynamic range of cameras – it doesn’t cover resolution, focus speed, ease-of-use, etc.
Modern cameras span a range of over 70 points in this pretty rigorous benchmark. In reality the range is larger because DxO doesn’t test camera phones and other good-enough-for-a-selphie models. A 3 point difference is barely visible to specialists, 10 points is readily visible, 30 points tends to be noticed by everyone.
Since my previous posting, 18 new cameras have been tested by DxO Labs. I also rescaled the graphs to allow for scores above 100 and extended the timeline somewhat. For an in-depth explanation of what you are seeing here, check my January 2013 article at either DxO Labs or Luminous Landscape.
Some of the highlights hidden within the newer benchmark results:
- Epic Dragon scores 101 points
The 19 MPixel Epic Dragon video camera can take better stills than any existing still camera. This is especially usual given that the Epic Dragon has a moderate sensor size. Because it is only a prototype, DxO did not include the Epic Dragon in its normal test result database. After all, you can’t buy it.
Note that the Epic Dragon is a component of a modular video system: without a lens, we probably wouldn’t recognize it as a camera.
But its score demonstrates that today’s APS-H (1.3x) and larger sensors can break the psychological 100 point DxOMark barrier. So it is only a matter of time before we see commercial cameras scoring over 100 points in this benchmark. This may be asking too much for the expected Canon 7D Mark II with a 1.5x sensor, but could be achievable for one of the new 50 MPixel medium format cameras with a Sony sensor (Hasselblad, Phase One, Pentax).
Some of the top models (highest performance in its price class) are now mirrorless cameras. Somehow these are all Sony models (A3000, A5000, A6000, A7, A7r). Sony is currently the leading sensor manufacturer. Manufacturers like Nikon use Sony sensors mainly to boost the image quality of their existing SLR product lines.
- Sony A7s
The Sony A7s has a very low resolution (12 MPixel) for a full-frame camera launched in 2014. Its score is a bit low for a modern-full frame sensor (except for its High ISO subscore). From a still camera perspective it is not obvious why Sony introduced a sensor with such large pixels: it already supplies higher image quality at with higher resolution sensors (e.g. A7 and A7r). The answer to the puzzle may be probably related to the A7s unique 4K video capabilities. I wouldn’t be surprised if the A7s is also partly intended to test the market.
- Nokia Lumia Pureview
The Nokia’s Pureview smart phone models caught quite some attention with their 41 MPixel resolution. They score somewhat lower than cameras with a similar sensor size (e.g. Fujifilm X10). This is likely because the pixel size of just over 1 μm gives fill factor issues: a non-negligible percentage of the sensor area is lost as overhead and not used for light gathering.