Opticallimits

Ref:
RF 24-70mm f/2.8 L USM IS: https://www.canon.com.au/camera-lenses/r...-8l-is-usm
RF 15-35mm f/2.8 L USM IS: https://www.canon.com.au/camera-lenses/r...-8l-is-usm


RF 15-35mm MTFs here:
https://cweb.canon.jp/eos/rf/lineup/rf15...ec-mtf.png
vs
EF 16-35mm L III:
https://cweb.canon.jp/ef/lineup/wide-zoo...ec/mtf.png

RF 24-70mm f/2.8 IS:
https://cweb.canon.jp/eos/rf/lineup/rf24...ec-mtf.png
vs
EF 24-70mm f/2.8 II
https://cweb.canon.jp/ef/lineup/standard...ec/mtf.png

Not too much of a difference between those.

The EF 16-35mm f2.8 L USM is the best lens out there for its type, so not surprising there is not much of a difference with this new RF lens. The RF 24-70mm f2.8 seems to be a bit better than the EF lens. Lets hope it won't have similar front element coatings, of course.

I just hope for Canon that they can manage the QC of the 24-70mm IS. The EF version always struggled in terms of centering quality.

There was never an EF version with IS :-P

And your arch-nemisis, the EF 24-70mm f2.8 L USM from 2002, has been superseded MANY years ago (2012). So isn't it about time to stop moaning about that lens?