Sony FE 20-70mm f/4 G Aperture Series @ 52mm: Riparian Spring Green
A 20-70mm zoom is a tough optical challenge. It should be no surprise that various compromises have to be made to balance performance.
This comparison look at performance of the Sony FE 20-70mm f/4G on a 3D outdoor subject from f/4 through f/11, with an attention to sharpness and field curvature and focus shift.
Sony FE 20-70mm f/4 G Aperture Series: Riparian Spring Green @ 52mm
Includes images at up to full camera resolution plus crops from f/4 - f/11.