Yep, that's a very fine image Paul
Your colours look great and the detail is really good too.
I'm not sure what is causing your noise problem, I looked at the files you sent and I notice there is patchyness in your Lum shot that is being revealed when you combine the colour data, strange but I have seen this before and have never been quite sure what's going on
may be in your DDP process of shadows highlights filter or something similar used on the Lum (Ha)..?
I dunno but when Thors Helmet is displayed in this orientation it always looks like the Magic Pudding to me, running along
.....
...
Mike