Global shutter comes at a price – noise. According to DPR, Sony claims the a9 III, "...doesn't compromise on ISO performance or dynamic range." Giving them the benefit of the doubt, I suppose they mean that at base ISO the sensor is no noisier than, for example, the a9 II...at the same ISO value. However, going from ISO 100 to ISO 250 on the a9 II costs a stop of DR, and the DR of the a9 II at ISO 100 is already a stop lower than the R3 at ISO 100. Oh, how the times have changed...Originally Posted by Kayaker72
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