Old school basketball shooters have been putting strobes in the rafters for years. In the last 10-15-20 years the lighting technology used in larger arenas has really improved to the point it's not really necessary to use strobes to fill in gaps in the spectrum any more. Some still do it because they like to shape the light more so than because they need to fill in the spectral gaps and compensate for flicker.
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As for your green tint goes, remember that the green ←→ magenta "tint" axis is more or less orthogonal to the amber ←→ blue color temperature axis. So if the camera is automatically setting CT, then the WB may still be off. I almost always compensate a bit towards the magenta axis under stadium lights, though there is one venue that I see about once every two years (home and away region opponent) which has significantly less green than magenta and needs to be strongly biased the other way.
I don’t know whether he still uses the strobe with the new lights. They were installed 3 seasons ago, and at first got into fans’ eyes. People started wearing caps. He said they have been reaimed, and I think moved in the process. And of course last season I saw the games just on TV or devices.
As for the greenish tint. some of that was from the color of the lights, but also, the seats are red. When I was shooting video of pick-up games, most of the seats across from me were empty, so the camera was seeing a sea of red. One year I did try making a custom color balance, and that didn’t seem to help.
I could correct color a little in Final Cut Pro X, but not well enough to suit me. I concluded that the spectrum of the lights was spotty. Fortunately, my audience didn’t care.
The games were after hours during basketball camp, when the boys mostly are having snacks and going to their dorms. The camp staff included current players and the incoming freshmen players as well as some alumni in from playing in Europe. A few older campers and some prospects might play. So hard-core fans enjoyed getting their first look at the new freshmen and at potential players on our court.
There was no telling who might show up, and that was part of the fun, too. We had a few players from the Charlotte Hornets a few years ago. Sometimes there are players from other colleges. Some years back, both Steph and Seth Curry came and played, while Seth was still at Duke.
I used to use the project to learn whatever new camera equipment I had, S120, iPhone 6S, 6D2, and I think G7X II. I didn’t get to try the G5X II, but I did shoot some football with that before I left for Italy that fall. I was in Denmark in 2019 the last time they had the pick-up games. They did have a camp this year, but just a day camp.
I think it was with one of the S cameras that I had accidentally put it in a mode that substituted magenta for grays. I didn’t even know it could do that until I was ready to edit. I was able to desaturate the magentas in FCP X, so no one noticed, and I learned how to turn off that mode.