From Photoclubalpha "on-sensor PDAF zone is sufficiently large to lower maximum resolution"

Joel Benford wrote:

I thought that was a rather good review, though quite heavy reading. In particular, he makes a very good point about the EVF keeping the sensor running, which raises its temperature, which raises its noise. Thermodynamics (and power supply design) have a major impact on the noise performance of electronics at the limit, but they are largely ignored in photography forums.