Auto DRO is enabled by default on the Sony A7R III. You can also set the level manually, from 1 ("weak") to 5 ("strong"), or turn it off. As one would expect, DRO is only available for JPEG files.
Packed with a high-res 61-megapixel full-frame image sensor, the Sony A7R Mark IV is ... FE 200-600mm f/5.6-6.3 G: 600mm, f/6.3, 1/640s, ISO 5000 The 61MP sensor offers outstanding image ...