These graphs were produced using data generated by DXO Analyzer.
We shoot a specially designed chart in carefully controlled conditions and the resulting images are analysed using the DXO software.
Signal to noise ratio
A high signal to noise ratio (SNR) indicates a cleaner and better quality image.
JPEG images from the Pentax Optio RS1500 are on a par with the Fujifilm FinePix Z90 up to a sensitivity of ISO 400. The signal to noise ratio increases from ISO 1600 showing less noise than the comparison cameras, unfortunately the images lack detail.
This chart indicates that the Pentax Optio RS1500's JPEGs dynamic range compares well with the Nikon Coolpix S3100 and the Samsung PL210.