The DETU F4 is a 360-degree camera that is claimed to be capable of 8k at 24fps or 4k 60 fps. It uses four lenses and sensors, in a box-like body that weighs 670g.
- fully spherical, 360 x 360 coverage
- resolution: 8k (7680 x 3840) at 24fps or 4k (3840 x 1920) at 60 fps
- uses 4 memory cards up to 64GB each
- can record up to 250 minutes at 8k
- cost is 9,699 yuan, or approximately US$1,500.
There are samples on their website, but their downloading speed seems to be preventing me from viewing a higher resolution.