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.
Our analysis shows that the Olympus VG-170 has better signal to noise ratio results than the comparison cameras, and although its dynamic range performance at the lower end of the sensitvity range is beaten by the Samsung ST93, Ricoh PX and Nikon Coolpix S4150, from ISO 200 and above it achieves the best results.
JPEG Signal to Noise Ratio
JPEG images from the Olympus VG-170 have good signal to noise ratios across the sensitivity range beating the Ricoh PX and Samsung ST93 up to its maximum sensitivity of ISO 1600. The Nikon Coolpix S4150 just has the edge at ISO 1600.
JPEG dynamic range
This chart shows that the Olympus VG-170 has the lowest dynamic range in the group at low sensitivities, however from ISO 200 this chart shows that it out performs the Samsung ST93, Ricoh PX and Nikon Coolpix S4150.