CCing gray to white in color mask

[Elmer_Lang]

Hi

When I CC a shot, raising the exposure highlights, a window and a bit of a distant wall beside it rise above legal (100). I put a color mask on it and now that bit of wall is gray, its original color in the shot.

Is there anything I can do to color it closer to the rest of that wall, in other words, whiter? For instance, is there a doable combination of colors on the screen that combine to be white? I can get yellow or shades of violet but nothing close to white. ANd I'm not talking bright white.

I tried a regular mask hoping the gradations outside the mask might be less bothersome, at least to this editor, but it was still kinda odd. I also don't see how to try mask and color mask together. Is there a necessary order? Create mask first, then color mask?

2) I could put a copy of the clip on it, crop it and maybe feather it if that's possible. It's' something I haven't tried yet.

Any tips or ideas would be appreciated.

best
elmer

 

[Bruce Watson]

Is there anything I can do to color it closer to the rest of that wall, in other words, whiter? For instance, is there a doable combination of colors on the screen that combine to be white?

RGB is an additive color space. So, if R=G=B=256, you get white. As you decrease from 256, it becomes increasingly gray, until when you hit zero, you have black.

Most NLEs have a way for your to sample a given location and find it's RGB values. Swap that in for the area you want changed, and you get a "perfect" match. Except, or course, you won't. Because no real scene is just a block of a single color. And that's why we have feathering, blend modes, etc. so you can blend your changes in with few visual artifacts.

 

[Elmer_Lang]

Thanks for the reply! Your info is much appreciated.

Yeah, I'm kinda surprised FCPX doesn't have some way to sample a color. Or at least I haven't found it.

Maybe the boys at Apple forums have a way to do it.

Thx again!