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 Canon PowerShot SX40 HS show good signal to noise performance across the sensitivity range with results beating those from the Sony Cyber-shot HX100V, Panasonic Lumix DMC-FZ48 and Canon PowerShot SX30 IS.

For a full explanation of what our resolution charts mean, and how to read them please click here to read the full article.

Dynamic range

Canon powershot sx40 hs dynamic range

Canon powershot sx40 hs dynamic range

This chart indicates that the Canon PowerShot SX40 HS's JPEGs are an improvement over the Canon PowerShot SX30 IS and just take the lead over the Sony Cyber-shot HX100V from a sensitivity of ISO 800. This shows that the Canon PowerShot SX40 is capible of capturing a more shadow and highlight detail in low light conditions than the Sony HX100V, Panasonic Lumix DMC-FZ48 and Canon PowerShot SX30 IS.

For more more details on how to interpret our test data, check out our full explanation of our noise and dynamic range tests.

ABOUT THE AUTHOR

News Reporter

Amy (Twitter, Google+, blog) is a freelance journalist and photographer. She worked full-time as the News Reporter / Technical Writer (cameras) across Future Publishing's photography brands and TechRadar between 2009 and 2014 having become obsessed with photography at an early age. Since graduating from Cardiff Journalism School, she's also won awards for her blogging skills and photographic prowess, and once snatched exhibition space from a Magnum photographer.