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.
JPEG signal to noise ratio
The signal to noise ratio in JPEG images from the Nikon S6400 is lower than in images from the Nikon S6300 and Panasonic FS45 throughout the entire sensitivity range. It starts off worse than the Sony W690, too, before overtaking it at ISO 800 and above.
JPEG dynamic range
The Nikon S6400 performs better in terms of dynamic range, this time showing stronger results than thePanasonic FS45 throughout the entire sensitivity range, and beating the Sony W690 from ISO 800 and above. The Nikon S6300 still has a greater dynamic range, however.