Green & Purple Only On 5d MkIII

Hi all,

I'm having this issue with my Canon 5d Mkiii running through HDMI to the Production Studio 4k > UltraStudio 4k > Mac. I've tried searching google and these forums but trying to explain it is next to impossible so I've attached a screen shot of the Media Express window (it looks the same as this in multi screen, on the front lcd, everywhere...).

I have a Sony FS700 and two other Sony cameras running with it that show up perfectly fine.

Any help would be greatly appreciated!

Cheers,
Sam

rgb colorspace.
someone recently suggested a cheap hdmi splitter inline fixed the problem. or you could put a hdmi to sdi battery converter in between that's what i do.

Thanks evilb, much appreciated. Wasn't sure on what to call the problem so it was a bit hard to search for it!

Edit: Running the 5d through the Camera Converter fixed the problem.