FORUMS: list search recent posts

Vectorscope

COW Forums : DaVinci Resolve

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
stig olsen
Vectorscope
on Jun 4, 2012 at 9:09:52 am

Hi,

I have a situation where its a green field and the color green exceeds 75% of the vectorscope.
Lets say I want to keep it "that green"- what is the best approach this without the need of desaturate the green?

Stig


Return to posts index

Robert Due
Re: Vectorscope
on Jun 4, 2012 at 2:42:49 pm

Either isolate the green with a secondary key and then create an outside node OR you could use the Hue/Sat curves.

Robert Due
Editor / Colorist
INDEPENDENT EDIT
DaVinci 8.2
OSX 10.6.8
MacPro 8-core 4,1 2.93 Ghz
8GB RAM
Nvidia GT120/GTX288 (CUDA 4.0.19)
Decklink Extreme3D+
Panny BT-LH1710P/ Panny BT-LH2600W
Tangent Wave


Return to posts index

Joseph Owens
Re: Vectorscope
on Jun 4, 2012 at 3:04:32 pm

[stig olsen] "what is the best approach this without the need of desaturate the green?"

Beyond the simple mechanics of isolating it, you are asking about "legalizing" it, as I read the question.

If the tonal impression is what you want to preserve, then you are allowed a certain overage in saturation --> But do recall that 75% is really just a target value for setting up color bars, as the YCyGMRB waveform is specifically set up to that standard so that we can reproduce them. Its like "0" VU tone.

Composite baseband usually allows up to 102IRE (luminance), and up to about 120IRE Y+C. If you do not have a good composite baseband simulation, this might be hard to measure. Its another argument for outboard scopes.

Generally, a tonal value is easiest to re-simulate (and tuck under the legalizer) by adjusting its luminance values -- In yellow and green, dropping the Y component in effect sometimes serves to "intensify" the saturation... so tweaking the saturation down a little more should serve the purpose.

jPo

You mean "Old Ben"? Ben Kenobi?


Return to posts index


Robert Due
Re: Vectorscope
on Jun 4, 2012 at 3:18:29 pm

Yeah, what jPo said.

Robert Due
Editor / Colorist
INDEPENDENT EDIT
DaVinci 8.2
OSX 10.6.8
MacPro 8-core 4,1 2.93 Ghz
8GB RAM
Nvidia GT120/GTX288 (CUDA 4.0.19)
Decklink Extreme3D+
Panny BT-LH1710P/ Panny BT-LH2600W
Tangent Wave


Return to posts index

stig olsen
Re: Vectorscope
on Jun 5, 2012 at 2:09:35 pm

Thank you guys!


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2017 CreativeCOW.net All Rights Reserved
[TOP]