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As part of our testing we shoot a specially designed chart in carefully controlled conditions and the resulting images are analysed using DXO Analyzer software to generate the data to produce the graphs below.
A high signal to noise ratio (SNR) indicates a cleaner and better quality image.
For more more details on how to interpret our test data, check out our full explanation of our noise and dynamic range tests.
Here we compare the Samsung NX300 with the Sony NEX-7, Olympus OM-D E-M5 and Panasonic GH3.
We have retested the Galaxy NX with the new firmware applied. Results do appear better, but not significantly so.
JPEG signal to noise ratio
The chart indicates that the Samsung Galaxy NX has performed moderately well, beating the Sony NEX-7 at its lowest sensitivity of ISO 100. In the mid ranges, it is beaten by all of the other cameras on test, aside from ISO 800-1600 where it very closely matches the Olympus OM-D. At the higher end of the scale, it beats the Sony NEX-7 by some margin but, competes very closely with the other cameras on test.
Raw signal to noise ratio
When shooting in raw format, the Galaxy NX doesn't compare as well, being beaten by all of the other cameras on test at every sensitivity. At higher sensitivities, it is reasonably close to the Panasonic GH3, but it is well below the Olympus OM-D and Sony NEX-7 at the lower end of the scale.
JPEG dynamic range
Again the charts show that the Galaxy NX was not able to perform as well as the other cameras on test, being beaten at every sensitivity apart from ISO 200 where it is almost identical to the Panasonic GH3. It is quite marginally below the Sony NEX-7, at the lower end of the sensitivity scale, catching up at the higher end. The Olympus OM-D performs the most consistently here.
Raw dynamic range
It's a similar story with the raw dynamic range results, although the camera does more closely match with the Panasonic GH3, even beating it throughout most of the sensitivity run. The Olympus OM-D E-M5 is the best performer here, outperforming the Galaxy NX by some margin at every sensitivity.
