I was testing out my 24mm for an extensive amount of time today and my old 5dm1 and 1dm3 both struggled to get sharp test images. The point of the test is that i plan to shoot the 50L on the 5dm3 and the 24 on the 5dm1 and on occasion the 1dm3 to bring it closer to a 35mm lens. On the 5dm3 both my 50L and my 24L nailed it so sharp it was sick. That wasn't even using calculated time consuming multiple taps to the focus which i do as a standard for large aperture shooting. It was using single shot single point focus not spot focus. I even tried it in servo which i always found screwed up shooting with primes and it was crazy that it worked so well. This camera is very intelligent. Its like these primes are built for future cameras not older ones.
No I don't want to go thru all the work and post those.
No I don't want to go thru all the work and post those.