Hi all.

I'd appreciated some advice regarding why I have this green tint going on.

F11, 25s, ISO 100, 5Ds with a 16-35 L @ 16mm.
Filters were a 10 stop ND with 1.2 stop GND (behind) in a Nisi mount. No hood or lens protector between the lens and the filters.
The sunrise was maybe 20 minutes prior and 30° off to the left (wild guess).

I took dozens of shots with the same setup above before and after this shot with no issue. I assume the tint is to do with an angle but I haven't seen this before.

The image below is the raw file with no post processing.

Cheers.