Anybody see this yet?
It seems to be an all-in-one calibrated portable integrating sphere made for flashlights, with a warranty and free re-calibration at any time (you pay shipping), for $299. Not exactly opple cheap but could be attractive for reviewers when just the luxmeter can cost about that.
Became aware of it from this video from TTC, a YouTube channel that mostly reviews power tools but sometimes flashlights. They use it a bit in the video.
No affiliation or anything