I've been looking in to making an Iron Man inspired HUD Anim, but I cant figure out a way to get the fading around the head so that it gets darker, and I'm not sure how to use a mask to do this, and even if I use a feather or edge blur, I'm not getting the result I'm looking for. So, how would i go about accomplishing this (hopefully w/out sitting for hours doing rotoscoping)? What I've got (if I add feather, I get a bg that has lots of different colors, etc.):
You can try this and see if it gets you close to where you want to be:
It's going to be subjective, so play with the Mix Fac to see if that does the trick for you.
ALTERNATIVELY You could start doing something like this as well. For the right transition, you may have to layer a few more iterations of things before you nail it ( Somthing Like this ).
!!Appended Since Comments Below!!
Here's an example of layering some of these effects (It May be a poor one, but it should give you a little more perspective). Also I've attached the blend so you can look at the setup a little closer.
https://youtu.be/COt3kTDhi10 this vid might help. I'd def start with a better lit face though. Starting with that dark image, you are making more work for yourself on the backend. Is start with a well lit face, which gives you more room to darken the edges around the face later. Maybe a mask, darkened and feathered on the inside to give a sort of vignette effect, then tint the face a little to stimulate the elements in the HUD reflecting off the face.