Original subtitles

In this clip, we're going to take a look at despill with the huecorrect tool.

The huecorrect offers a great alternative or serves as an

addition to other despill tools and workflows.

It can help select an isolated set of color values

and suppress them or saturate them.

So let's take a look at our script.

So here's a script, and before we get into huecorrect,

let's take a look at how it works with opposites on the color wheel.

So here I have my image, and I'm going to do a box over here and add a gray tool.

And in the gray tool I'm going to go under the gamma,

and I'm going to select this little color wheel,

so that's going to be control, alt, and left mouse button click,

it brings up this great little pop-up.

Now on the color wheel, here is our green,

and opposite of the color wheel is magenta.

Any colors that are opposite on the color wheel cancel each other.

Now this, keep in mind, is not 100% green,

as we know, so it won't be exactly 100% in the magenta over here,

it will be just opposite of whatever this color is.

So we take a look at that.

It's going to turn it so that it's a brownish color.

So it does start to remove some of that green.

Now let's take a look at what that looks like in a blue screen example.

So we know that the magenta will cancel out the green.

So what about the blue?

So here is our blue screen image,

and we're going to also go into the color wheel of the gray tool,

so here we're going to go, so in the gamma,

and click, and opposite of the blue is going to be yellow.

So that's also going to cancel out the blue.

So let's take a look at that.

Here we go.

And it also turns it a brownish color.

So opposites on the color wheel do cancel each other out,

and we're going to take a look at one last thing.

So control, alt, click one more time, and that is TMI.

TMI stands for temperature, magenta, and intensity.

Here we have cool and warm, magenta and green.

So it's a really great way to suppress a color or at least to cancel it.

And another thing to keep in mind is what they do on set.

So sometimes what they do on set is if they're working on a green screen,

that they use magenta gels on the light,

and that's to cancel out some of the spill.

And of course on blue screen, you would consider yellow.

Now, that isn't necessarily always the case,

but it is an alternative if you're having any issues.

So now that we have the basics of how to cancel out a color,

let's take a look at the huecorrect.

So over back to our script, and back to our blue screen image,

and we're going to use a default huecorrect tool.

So in the huecorrect tool, we are going to sample the bluescreen,

so control, shift, drag, and select blue suppression.

Now where this horizontal line meets the vertical one,

that's where our color is that we sampled,

so let's take a look at that tool right now,

and we're going to pull it down,

and you can see that it starts to get rid of the blue screen,

which is really great, however, same issue that we had before,

this fussy little edge in here is not addressed.

Now if we start to pull this wider, it starts to affect our other colors.

So here we'll put really, really wide.

Not doing a huge change, however, if we pull these narrower,

look what happens, we start to really crunch those colors,

and it starts to artifact quite badly, actually.

So we don't want to make this too narrow,

just like we don't want to make it too wide.

Too narrow means too narrow of a range,

too wide means we start to affect other colors.

And the other thing to keep in mind is also we don't want to put this too low,

so keep it within reason.

Try to keep it within this initial grid if possible.

So now let's take a look at what that looks like with an expression.

So here's our expression, not much different than the huecorrect,

slight modification, and we're going to take a huecorrect tool,

but this time we're going to sample where this fussy spill is.

So control, shift, drag, again, keep in mind where this is overlapping here,

so instead, I'm going to actually go into the blue and select where they overlap,

and match the two of them together.

Now if I take a look at this and I increase the blue, I am saturating it.

To cancel the blue, pull it down, and it's starting to look pretty good actually,

overall.

Now if I pull it down too far, then I start to ruin my image.

So don't pull it too far, let's just dial that back.

So where was it before?

It was here.

And here it is again.

So not 100% perfect, it definitely needs a little bit more massaging,

we'll take a look at that in the new clips following this one,

but it's already looking a lot better than it was before.

We're not changing too much of this image,

which is great as well, just ever so slightly to get rid of some of that blue,

and again, we'll refine it with a couple of extra steps,

just to get these final last edges.

So now that we have reviewed the blue screen,

let's take a look at what it looks like with a green screen.

So one more time, so here's our green screen.

We have done a huecorrect, so let's just huecorrect this here,

and despill the green screen, so close to our character,

select that green, pull down that green.

So let's take a look what that looks like here.

Despill, that's the brown that we're looking for,

close to her hair, however, let's see what happens if we pull this too far.

So again,

similar to that expression node in the last clip where

it starts to change our character, let's take a look at this,

so this is what we were talking about with pushing this tool too far.

So we've pushed it way too far, it starts to change her skin tones.

Only push color correction as far as you need to,

especially with despill,

so that we retain as much of the original color as possible.

So one more step, so let's take a look at that expression,

little bit of a huecorrect, ever so slight,

mostly affecting these edges on the side here.

So here is it before, take a look at it between here and here,

and after, and again just enough to really fine tune it for final output.

So now that we have reviewed how to use the huecorrect,

in addition to our expression node,

we're going to take a look at how to use the spill matte

to take this despill through to final.