Infrared pollution - post production solutions?

[Reinis Traidas]

Hello,

I recently stacked two heavy ND filters on the RED. Thus, I learned a good lesson not to stack anything ever again, at least nothing past 4 stops worth of ND.

Obviously, I got a pretty significant IR pollution and a red/magenta color shift for most of the rushes. The blacks aren't that polluted, but the whole image has a reddish cast, making it look a little bit like a 70-ies film shot on old Soviet film stock.

I was wondering if any of you have any kind of experience in how to fix this in post? Are there any color correction solutions other than "try adding blue, desaturating and then overlaying a stylized tone"? I'm a bit worried.

 

[Kevin G]

I had a similar issue stacking NDs on a Nikon lens. The image wasn't that bad and we though that we could live with it, until we noticed that all of the grey images had turned purple. Had to fix it in motion. Guess we need to test more when it comes to stacking NDs.