[Tig] FC Color query

[Steve Hullfish]

As for the highlight key defocus, there are two ways, both in the  
ColorFX room.

The easiest way:

Drag an HSL Key effect, a blur effect, and an Alpha blend effect into  
the workspace. Link the HSL Key to the far right "triangle" on the  
Alpha Blend. This is the Alpha Blends' "alpha input" or key input.  
Then link the Blur to the far left input on the Alpha Blend node.  
There should automatically be an output node attached to the Alpha  
Blend's output. Then create an HSL key. I made a luma key with a nice  
falloff. Adjust the blur amount to defocus the highlights.

The way I was shown:

Drag a black and white effect, two blur effects, an RGB Scale effect  
and an Alpha Blend effect to the workspace. Link on of the blurs to  
the far left input on the Alpha Blend. Link the other blur to the far  
right alpha blend input (key channel). Link the bottom of the RGB  
Scale effect to the top of the blur effect going in to the key  
channel. Link the bottom of the black and white effect to the top of  
the RGB Scale effect.

Essentially what you've done here is create a black and white image,  
then "scaled it" creating a key of your highlights or lowlights or  
midtones or whatever, then blurred the hicon black and white image  
and used it as an Alpha channel to effect the other blur effect going  
into the first input of the Alpha Blend.

Seems complicated probably, but once you've done it once, you save it  
and then all you have to do is adjust the key and the amount of blur  
and you're done.

On Jun 22, 2007, at 8:48 AM, simon astbury wrote:

> Thanks to Scott Klein for support in 2007.
> TIG portal: http://tig.colorist.org/wiki3
> 2007: 15th year of the TIG.
>  ====
>
>
> I have been playing with Color for a few days and had to demo it at  
> the
> Broadcast Live show in London. There is something that bothers me  
> (more than
> all the other things that bother me about Color). Is there way of  
> making a
> Hue curve adjustment through a shape in the secondaries ? I have  
> tried to do
> it but the hue adjustment applies itself to the whole image. Is it  
> a bug or
> an intentional feature?
> Also is there a way of de-focussing through a shape, or de- 
> focussing through
> a key ? These are pretty standard features for most systems, so I am
> inclined to think that I am doing something wrong. I hope someone  
> out there
> can enlighten me.
>
> Thanks
>
> Simon
>
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Steve Hullfish
Verascope Pictures
(630) 717 9069 office
(312) 399-4237 cell
www.veralith.com