Manuel Joson | Sony A7RII : ISO and Low Light Test #1 @mj16encho | Uploaded 9 years ago | Updated 3 hours ago
Sony A7R Mark II : ISO and Low Light Test #1
Lens: Tokina 11-16mm DX II F/2.8
Adapter: Commlite EF-NEX
4K Super35 mode (downscaled to 1080p)
Picture Profile PP7
S-Log2 S-Gamut
ISO 800-25600 (not 800-32000, apology for the wrong typo ^^)

As you can see from ISO 800-3200 there's a visible banding artifacts at the back of laptop. Maybe it's just caused of youtube conversion but honestly not visible in the original footage file.