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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.
For all but a sensitivity of ISO 3200, where the Canon 600D scores the highest result, the Sony Alpha 37 beats the Nikon D3200, Alpha 35 and Canon EOS 600D. This shows that noise is kept under control in low light situations.
At the lower end of the sensitivity scale, the Nikon D3200 and Alpha 35 just have the edge on dynamic range over the Alpha 37 for TIFF files (After conversion for raw) . At all but ISO 6400, where the Nikon D3200 just scores a better result, the Alpha 37 shows that it has a higher dynamic range than the comparison cameras.
Up to ISO 3200 TIFF (After conversion for raw) dynamic range results between the Alpha 37 and Nikon D3200 are close. Above this value the Alpha 37 breaks away showing that it is capable of capturing a good amount of tonal graduation in both shadow and highlight areas even at high sensitivities.
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Amy has been writing about cameras, photography and associated tech since 2009. Amy was once part of the photography testing team for Future Publishing working across TechRadar, Digital Camera, PhotoPlus, N Photo and Photography Week. For her photography, she has won awards and has been exhibited. She often partakes in unusual projects - including one intense year where she used a different camera every single day. Amy is currently the Features Editor at Amateur Photographer magazine, and in her increasingly little spare time works across a number of high-profile publications including Wired, Stuff, Digital Camera World, Expert Reviews, and just a little off-tangent, PetsRadar.
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