Finally down at my computer again, it's a few weeks in between, lol.
Here's a shot of my son from last weekend I believe it was.
Lit with Broncolor Siros 800 L in a silver BD right just outside of the frame.
The way the R handles focusing in strong backlight is amazing! Used face detect and single point and it just worked. And might I add the flare pattern from the RF 50 wide open is gorgeous. Forget about thinking the bokeh is busy, it's very close worst case trees in the near background, lol. I did this shot as a test of AF, flare, bokeh in a pretty horrible situation, couldn't be happier.