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The effect of a few lumetri in a clip on each other

Explorer ,
Sep 14, 2020

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I have a clip
I used several lumetri on it and test two ways, but the result is the same.
1. I create a lumetri on the clip and with the mask I specify the range and change the light, now on the same clip I create another lumetri to change the light of the whole image except the mask, every change I make on the light also affects the range of the mask. .
۲. I do the above work with two layers of adjustment, I put a separate one lumetri on each adjustment and the other has a mask, but they still affect each other.
Where is the problem?

Can not program?

thanks.

If we do only what we know, we will never progress

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The effect of a few lumetri in a clip on each other

Explorer ,
Sep 14, 2020

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I have a clip
I used several lumetri on it and test two ways, but the result is the same.
1. I create a lumetri on the clip and with the mask I specify the range and change the light, now on the same clip I create another lumetri to change the light of the whole image except the mask, every change I make on the light also affects the range of the mask. .
۲. I do the above work with two layers of adjustment, I put a separate one lumetri on each adjustment and the other has a mask, but they still affect each other.
Where is the problem?

Can not program?

thanks.

If we do only what we know, we will never progress

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Effects and Titles

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76

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Adobe Community Professional ,
Sep 14, 2020

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embed.jpg

...so we dont have to download unknown files: we help you, you help us. Thanks! 

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Explorer ,
Sep 14, 2020

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88c4f690-6791-4383-8af1-417eacd222be.jpg

 

d6cc2939-c190-422f-84aa-05c9f2fbbf4a.jpg

 

i do attach 2 picture with you say upload way.

now reattached.

 

If we do only what we know, we will never progress

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Adobe Community Professional ,
Sep 14, 2020

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I'm not entirely sure I follow what you're trying to do, but ...

Lumetri color is going to be additive. So if you create multiple instances, they will effect each other (from top to bottom in the Effect Controls Panel).

 

If you want to mask a certain area on the 1st instance of Lumetri color, you make your mask and do your color grade. It sounds like you've done that.

If you want to create another instance of Lumetri and effect everything except that area, then you want to duplicate your first instance so that you have the exact same mask (copy and paste back onto the same clip), then you need to invert the mask. Make your new color grading changes to that second instance (note that it will start with your previous grade since you copied and pasted, so you may need to reset that).

PhillipJoseph_0-1600111453283.png

 

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Adobe Community Professional ,
Sep 14, 2020

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The processing of effects in Premiere is in general pretty straight forward. It's top down in the Effects Control panel. Within most effects, including Lumetri, it's top down within the effect also.

 

In your example, the mask is applied to the lower, second, or later instance of Lumetri. Any change you make in the first instance affects what the second instance 'sees' for data. The second instance does not see "original" clip data, only the data as processed from the upper, first instance of Lumetri. So anything done in that second instance affects the entire image.

 

Within the Lumetri effect, most things are applied top-down also. This means that any change in say Basic tab is processed before the Creative tab is processed, and the work in the Creative tab is done to the clip as already including the work (changes) of the Basic tab.

 

Curves has a bit of a curve ball: the RGB curve is processed first, again as applied to the data from the clip after processing the Basic/Creative tab changes ... but ... the HSL curves are all processed from the data as it exists after processing the RGB curve. So the HSL curves are essentially processed in parallel and applied to the image after the processing of the RGB curve.

 

Next the Color Wheels tab is applied ... then the HSL tab. Which is a problem.

 

Every thing done to the clip prior to the HSL tab changes what the HSL tab "sees" for creating the mask used within that tab.

 

So if you use an HSL tab, set a mask and in the lower part of the tab make changes, then go to any previous tab or instance of Lumetri and make a change, the data used to make that HSL key may likely change.

 

So ... processing order is critical. It can at times take a bit of testing and experience to plan out how to accomplish something ... but very complex things can be done once you know how.

 

And Phillip is absolutely correct, if you wish to affect the area inside that mask, then make different changes to the area outside the mask, you need to use that same mask for both instances of Lumetri. And invert the instance of the mask used for the outer area of the image.

 

You can simply copy the mask ... click the name of the mask in the ECP, right-click and copy. Then right-click on the mask option in the second instance of Lumetri, and paste the mask in. Check the "invert" box.

 

Now you can work in that instance without affecting the area within the mask applied to the first instance.

 

Neil

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Explorer ,
Sep 14, 2020

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thanks.

with inverted mask for 2 instance every thing is good, but when use thired instance what i do?

please see my setting, i have 3 instance lumetri, top, inverted top, down, with your solution top and inverted top is ok but when add down instance, if change this or change on inverted effect each.

often i need use 3 or 4 instance in one clip, what i do ?Manisoft_2020.09.15_1.jpg

 

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Adobe Community Professional ,
Sep 14, 2020

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You can create as many instances of Lumetri as you want and if you mask it, it's going to effect just the area inside the mask, or if you invert it, it will effect the area outside the mask. That's about all there is to it.

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Adobe Community Professional ,
Sep 14, 2020

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I would need to know the entire list of things you're trying to do. Then I could give advice.

 

Neil

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Explorer ,
Sep 15, 2020

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please see top photo uploaded

i have 3 instance lumetri, top, inverted top, down, with your solution top and inverted top is ok but when add down instance, if change this or change on inverted effect each.

often i need use 3 or 4 instance in one clip, what i do ?

If we do only what we know, we will never progress

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Adobe Community Professional ,
Sep 15, 2020

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I still don't have a list of what you wanted to work within the clip.

 

It seems like you are trying to treat each area as a discrete, separate bit. Not the way grading is managed. The basic process is pretty similar across most colorists, though as skills improve the steps can sort of blend in to each other. And each step is not to "perfect", just to "good" ... time issues.

 

1) Get overall color & tonal balance as neutral as possible ... nothing crushed black, nothing clipped on whites, color looking neutral also.

 

2) Match clips roughly down the line. Especially within sections such as scenes.

 

3) Pick the most notable things that need "fixing" with something like a mask or HSL secondary, hit them.

 

4) Apply overall-look if time and needs allow.

 

5) If you've got time to burn, go back and hit more fixes.

 

 

But note: this isn't built on fixing say the color of the road, then the color of the wall, then the skin tones of 1, then skin tones of 2 ... they've not treated as individual separate items except as a needed fix.

 

Balance/neutral the image first ... then match to the clips around it ... the whole clip ... THEN the fixes are applied to a 'stable' image.

 

Neil

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Explorer ,
Sep 16, 2020

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This is my scenario.
In one image, I want to adjust the 4 sections in terms of light and color.
For each part, I run a lumetri with a mask. These 4 lumetri affect each other and I do not want to.
According to the above description, this problem can be solved in the opposite way with two lumetri and a mask and active invert on one, but when there are more, how?...

If we do only what we know, we will never progress

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