I thought the same and went looking recently, Black Magic gear looks well suited.
Camera:
- https://www.blackmagicdesign.com/au/products/blackmagicpocke...
- https://www.blackmagicdesign.com/au/products/blackmagicmicro...
Capture card:
- https://www.blackmagicdesign.com/au/products/atemmini
- https://www.elgato.com/en/gaming/cam-link-4k
- Generic eBay capture card