So, after shooting the meet with the 70-200L f4, I am not sure that I can tell much difference between that and my own 70-300 USM II. Now, in my hands, it may certainly be user limited. I will say that the 70-200 is a great lens to use. Fast focus, nice weight and balance. All internal focusing. I plan to review the photos some more, side by side. The constant f4 was nice as late afternoon approached, did not need to crank the ISO to maintain a fast shutter speed

Last edited by duckster; 10/12/18.