Sony Alpha A68 review

Inheriting features from the more advanced A77 II, the A68 appears as a capable, cut-price alternative for the advanced beginner

Sony A58

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The signal to noise ratio is a scientific measure of the amount of random noise in a digital image. The higher the number the better because this means the level of noise is relatively low. We measure signal to noise in laboratory conditions using DxO Analyzer.

Sony A68 lab tests

JPEG signal to noise ratio analysis: Noise is well controlled in JPEGs, with results on a par with or just ahead of those from rivals at lower sensitivities and a generally good performance with increased sensitivity, but a sharp drop after ISO 6400.

Sony A68 lab tests

Raw (converted to TIFF) signal to noise ratio analysis: The raw files tell a very different story. Here, the A68's signal-to-noise ratio is consistently lower throughout the ISO range than the results from competing cameras.