Thanks Cary for your reply. Are you saying you've been able to have Varicam VRAW ISO 5000 footage in resolve 15 and not have it extremely dark?
I gave up after trying everything and rolled back to resolve 14.3 (luckily I kept database backups

).
But I'd like to use 15 with it's better features, so I'm still curious if this is a bug, or I had set something incorrectly. I'm suspecting this is a bug in Resolve 15.