Major issue with HVX and ND

[smelni]

First let me preface this with saying I love the HVX and we are shooting our feature with it.

But we have run into a major issue - it appears that the HVX, for whatever reason is not compatible with large amounts of ND. I have seen this with both filters and ND on windows.

In low abounts (.3) it is fine and the filters and/or gels cut the light correctly. But in higher amounts (.9 and higher) the ND turns the light pink. So much so that it is noticable. If you use white balance to correct it, the scene turns green to offset the pink.

This has happens with me with tiffen ND filters and with roscoe nd gels on windows. My understanding is that ND is color agnostic and should not cause this.

So this limits creative use of bright exterior lighting with interior scenes and is causing huge issues for our production.

Has anyone else seen this, have an explanation or a suggestion.

Jan - panasonic - any reports of this from other users?