E-M1II pattern noise issue tested by J.S.Park

J.S.Park sent me this message:

You may know the Sony sensor having phase detection pixel shows banding in strong light. Olympus E-M1 Mark II having such Sony sensor also shows similar phenomenon.  Sony camera shows banding while Olympus E-M1 Mark II shows pattern noise. I have thoroughly tested it  and posted it in my blog:
http://lenswork.tistory.com
I’d like to share my findings.

It appears this is a common issue on all sensor with phase detection pixels. Don’t think there is a workaround yet. And don’t get alarmed because this happens in certain very specific and rare conditions only.