Variable vs Fixed

Tried various shots from F5.6, 8, 11,16,22,32 using the FE 24-70mm kit lens  set at 50mm auto iso, tungsten
iso was 3200,3200,6400 the rest
Results

Then with the Sony FE 50mm F1.8
From F5.6, 8, 11, 16, 22
iso was 2000,4000,6400 the rest
We get