feature request: Hue and Sat curves

[Ola Haldor voll]

It’s interesting – I’ve see this kind of request pop up a few times now.. I never touched these controls in Color, so I’m not missing them.

Any explenation on the purpose of them and why you’d do the job with those controls vs. those in DaVinci at the moment would be an interesting read..

[Blase Theodore]

Example scenario
Lets say you have an image that was balanced for daylight and then exposed to tungsten. Super yellow. If you shot it on say 5D, there’s not gonna be much info to play with…

In resolve:
You’d “balance the image” by pulling out yellow and adding blue till it looked neutral. At this point you’ve thrown away half of your image data (lets assume 411 colorspace for simplicity- The blue channel contains 1/4th of the pixel data of that green channel, and the image itself has very little blue in it. You’re throwing away the yellow green which is the strongest channel, and stretching out the blue which is the weakest) So your image starts to look like crap.
Or..
You use the qualifier to select yellow hue only, and you desat and hue shift it before grading a second layer. The result is dirty. Don’t know why but I’ve compared it.

In Color:
You’d open a secondary curve, notch the yellow and green sat down, blue magenta sat up. Then you’d nudge the oranges towards red, and the blues away from magenta. You’re not throwing away pixel data, you’re just reshaping it.

When an image is exposed too warm or too cold, the colors exhibit a non-linear hue shift. The reds might be in the right spot, and everything else may need to shift exponentially.

Also curves are super fast. I can make trees the right color green, or fix skintones, or fix a sky in a matter of seconds. Waaay faster than pulling a qualifier that doesn’t suck, and definitely cleaner to paste across many shots.

Lastly as a styling tool, they’re much faster to get a certain look.
If I wanted to get the “steely action” look, I’d desat the yellows and reds, and nudge the greens hue up towards blue, and the magenta hue down towards blue. reproducing such a style with qualifiers would be time consuming and possibly difficult across multiple shots.

[Robin Erard]

Hello,

I’m agree, curves are so usefull. It is the first thing I use to correct a “skin tone”. Or to desaturate a color range.

I hope they will add this in the next version

Robin

réalisateur, scénariste, monteur
http://www.robinerard.ch

[Ronald Anderson]

I am presently working with David Cat of Film Systems, here in Alpharetta, GA. Together we are putting forward suggestions, and recommedations for software updates and improvements to Black Magic. I am showing David the simplicity and ease of the secondary graphical displays in Apple Color, so as to add a similar tool set in Davinci. I agree with your posting, that they are a very quick way to achieve hue and saturation adjustments, without having to make a “qualifier” and fine tune it.

On another note, I believe that working in Drop Frame time code is coming very soon…..

[Erik Lindahl]

Even if I’m not a DaVinci-user yet, I do use Apple Color extensively and this is one of the single most used features I love for color-correcting or grading in there.

– Tweak saturation in all colors or get more of a selective-color look with 1 secondary
– Tweak hue in all colors with 1 secondary (the same secondary if you want to).

It’s awesome for so many things I don’t even know where to start. I would have thought this was a “standard” grading features but evidently it’s not.

————————
Erik Lindahl
Freecloud Post Production Services
http://www.freecloud.se

[Robbie Carman]

[Ronald Anderson] “Drop Frame time code is coming very soon”

Yes that is that is what I’ve been hearing. Hooray!

Robbie Carman
—————-
Colorist and Author
Check out my new Books:
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[Joseph Owens]

Eh?

Er… six-vector hue/sat secondary control was standard from the very first Renaissance. ????

So…. the more “sophisticated” the tool gets, the more simple, direct methods get dropped?
Am I missing something here? This sounds ridiculous.

jPo

You mean “Old Ben”? Ben Kenobi?

[Peace Villow]

[Joseph Owens] “Eh?

Er… six-vector hue/sat secondary control was standard from the very first Renaissance. ????

So…. the more “sophisticated” the tool gets, the more simple, direct methods get dropped?
Am I missing something here? This sounds ridiculous.”

The last time I used it (yesterday) the six vectors still there.
Although now instead of using individual knob for each color (like in the old 2K panel), you only have three HSL knobs for all the colors.
So you have to select the color first (there’s a preset for this on the Resolve panel so you don’t need to pick a color from the image) then change the HSL using the three knobs.

Now the problem is: the six-vectors color preset (RYGCBM) only appears when you use the Resolve panel.
If I’m not wrong, you can’t load the six-vectors preset using the Wave panel or mouse&keyboard via the GUI.

The real question is: Does the six-vectors in Resolve do the same thing as the Hue_Sat curve in Color? 🙂
I have no access to Color, so maybe someone can check this for us.

Best,
Peace Villow

[Vladimir Kucherov]

Aha, another resolve panel only feature. I’d be curious to see what the full list of those is.

[Ola Haldor voll]

Having a complete list of Resolve panel only features would possibly make more sense to value the panel as more than just a tool with rings, balls and buttons as I would think it was.