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
This chart shows that the Nikon P520's JPEG files have a similar signal to noise ratio to those from the Sony HX200V and Panasonic Lumix FZ200, and a weaker ratio than those from the Canon PowerShot SX50 HS, at every sensitivity setting.
JPEG dynamic range
JPEG images from the Nikon P520 again show a weaker dynamic range than those from the Canon PowerShot SX50 HS at every ISO setting, but produce a similar dynamic range to those from the Sony HX200V and Panasonic Lumix FZ200.