Lesnumeriques believes that Global Shutter sensor is more energy intensive and therefore a bit more noisy

Lesnumeriques tried to get some answers from Sony managers on why the A9III has a Base ISO of 250. But they gave none because “There is a huge secret around this sensor “. The French magazine also tried to understand why the Baso ISO is higher than on the A9II:

In terms of sensitivities, the quest for the lowest possible native ISO to satisfy lovers of image perfection has given way to speed. This is why the minimum value is 250 ISO, instead of 64 on some cameras. While the engineers did not agree to answer our questions on this subject, the theory is that the global shutter sensor is more energy intensive than traditional sensors; Additional electronic activity and greater power consumption generate increased electromagnetic noise, limiting the ability to offer low ISOs.

However, we did not notice crazy digital noise, deviant colors and other artifacts. The image quality – especially with the sublime 300mm f/2.8 announced right away – is really very good. But the test will be necessary, particularly in terms of colors and dynamic range, which will be THE main thing to monitor with such a sensor.

After a few photo sessions, we must admit that the level of performance of the Sony machine is quite astonishing.

The camera will start shipping out ion more than three months only…so we still have to wait a long time before we can test a real final production version.

Preorders (shipment start Feb 23):
Sony A9III at BHphoto. Amazon. Adorama. FotoErhardt. Fotokoch. Calumet. WexUK.
Sony 300mm at BHphoto. Amazon. Adorama. FotoErhardt. Fotokoch. Calumet. WexUK.
Sonny A9III Vertical Grip at BHphoto. Amazon. Adorama. FotoErhardt. Fotokoch. Calumet. WexUK.
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Sony Europe 500 Euro/Pounds cashback at FotoErhardt, FotoKoch, Calumet, WexUK, Amazon EU.