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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.
JPEG images from the Sony Alpha 37 show improved signal to noise ratio results when compared with the Alpha 35, and also beat the Nikon D3200 and Canon EOS 600D at all sensitivities.
Raw images
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.
Dynamic range
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.
