The Canon RF 28-70mm f2 L USM is a class leading lens according to DXOMark.

Canon’s new(ish) Mirrorless cameras haven’t had the biggest selection of native RF Mount lenses to play with, but all the available lenses are strong performers. According to a new report from DXOMark, the Canon RF 28-70mm f2 L USM is one of their best yet, but it does come at a price. Join us after the break to see exactly how the lens performed during its time on the DXOMark assault course.
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https://www.thephoblographer.com/2019/07/01/dxomark-the-rf-28-70mm-f2-l-is-one-of-canons-best-lenses-yet/