I have been using the lens for almost a year. Camera Canon 5DM4.
I know two lenses that today are absolute champions in terms of image quality and resolution for cameras of the Canon system, these are EF 35L II and 135 ART. Yes, there are, of course, otuses, but that's another story and completely different prices.
The size of the lens and the weight distribution of the optical elements are very well done. Personally, I didn't get too tired. And most importantly - it is smaller than Sigma 85…