Just a question... I have a 5D3 and two 1DX's... I back button focus (which really makes no difference other than I'm VERY conscious of focus...)I would not call baseball stadiums and football stadiums as being horribly lit. They have reasonable lighting, unless the teams are playing in the dark.
I've "roughly" followed this "problem" (I had two 7D's prior which had the same set up... so I really don't understand...) and I can kinda see people's concern... I am normally shooting at night, under horrible lighting at baseball and football stadiums (thus why the 1DX's...)... is there a focusing problem that you're experiencing because the focus points are dark or is there something else that I'm missing?
The issue comes when literally using the camera in the dark with only extremely dim lights.
The fact that the AF points are black is only a part of the problem. The other part is that they are tiny with a thin line around them. I've no issue with the 7D because the large points are easy to see.
I am fine with anything that is lighted.
In your situation with dim lights, is the camera grabbing focus?
My worst situation is stadium lighting that is at best 12800 iso with white jerseys then throw in the home team wearing black helmet, black jerseys and black pants against the black sky of the night... But again, I'm not doing any "creative" framing at that point...
The reason I'm asking is because I have yet to take the focus points off cross type points and a lot of time am using the five multi-cross points up the middle with the camera in landscape... With 22k+ exposures on the 5d3 and 15k combined on the 1DX I've been pleased and haven't been comfortable venturing out to "test" my luck, ain't broken, nothing to "fix" mentality!
Thanks for the feedback!