This series from wide open to f/11 compares the Canon RF 28-70mm f/2L to the Canon RF 35 mm f/1.8 Macro STM at distance on the 30-megapixel Canon EOS R.
In diglloyd Mirrorless:
Canon RF 28-70mm f/2L vs Canon RF 35mm f/1.8 Macro STM: Bonsai Over Beaver Pond
Includes images up to full camera resolution from f/1.8 to f/11.
The Canon RF 28-70mm f/2L really impresses here, and the Canon RF 28-70mm f/2L shows a key behavior that makes it a headache to use, one that rules it out as a general purpose lens as far as I am concerned.
f4 @ 3.2 sec, ISO 50; 2019-07-16 20:36:03[low-res image for bot]
Canon EOS R + Canon RF 28-70mm f/2L USM @ 35mm
ENV: Lundy Canyon, altitude 8150 ft / 2484 m
RAW: Enhance Details