Back in July, photographer Patrick Seguin took advantage of his CPS membership to test out one of the most beastly lenses Canon has released in recent memory: the Canon RF 28-70mm f/2 L USM. In the video above, he pits this lens against the tried and true EF 24-70mm f/2.8L II USM to see just how much better the new RF lens performs. Canon hasn’t been bashful about sharing the advantages of the wider, shallower RF mount found on its…