RGB Balance reverts RGB

New Here ,
Aug 17, 2017

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Hello,

I am looking to create an RGB split effect but I am having some difficulty with the RGB balance effect. I have added it to an adjustment layer. Then, for example I have first refreshed the effect making sure all of the R, G and B values are at 100. Then I make the G and B values 0. If I then click away from that adjustment layer. The value for R goes from 100 to 39. The same happens when I separate the other colours. I need it to stay at 100 when I make it 100. Why does it revert back to 39? And how can I fix this?

Thanks in advance.

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Adobe Community Professional ,
Aug 17, 2017

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I find this too but the actual picture (looking at the scopes) stays the same even when it drops to 39. I think this is just a value display problem. Adding keyframes shows the correct value when playing but again if you click away and back the value shown is wrong.

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Aug 17, 2017

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Hi TiffanyD,

Why does it revert back to 39? And how can I fix this?

Sorry about the trouble, we are aware of this issue.

Our Engineering Team is working on a fix and it will be out soon.

Thanks,

Kulpreet Singh

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New Here ,
Mar 15, 2020

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Issue still there. Please Advise.

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Adobe Community Professional ,
Mar 15, 2020

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I've no clue why you're using that effect ... it is only an 8-bit effect, so ... personally, I would never use it nor advise anyone else use it. Besides the controls are pretty useless. They haven't done anything with it because it's so old and outmoded is my guess.

 

So your best suggestion is to simply stop using it. There are other tools that work much better for any color work.

 

Neil

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New Here ,
Jan 14, 2021

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 @R Neil Haugen  I find it obsurd that you say to stop using it, especially with your title as "Community Professional". This is an official effect from Adobe so why is there any need to stop using it? Pull your head out your arse and realise just because its old, doesnt mean it isnt useful you dumb b*stard. 

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Adobe Community Professional ,
Jan 14, 2021

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It is an 8 bit effect. Use that effet, and you drag Premiere out of 32-bit float processing to 8-bit processing for essentially the whole clip. In other words, 256 levels MAX in the computations process.

 

You WILL induce banding nearly immediately with any tonal or color changes worth noticing.

 

I don't care about being "old". I care about being lousy and damaging math. Which that 8 bit effect is. And I don't see any reason to be insulting and call people names in a public forum. Or even privately.

 

Neil

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New Here ,
Jan 19, 2021

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if this is the case, then what other coloring options would be more useful?  Because I've run in to the same issues and I'm not sure what route to take.

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Adobe Community Professional ,
Jan 19, 2021

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Which specific RGB effect are you using?

 

The "Color Balance RGB" is one I've seen a number of people using, and that one is 8-bit. Unwise. Especially as it does nothing the RGB curves tool in Lumetri can't do, except the Lumertri RGB Curves does it better and in 32 bit processing.

 

They also have the two in the "Obsolete" folder, "RGB Color Corrector" and "RGB Curves". Those are both 32 bit and GPU-accelerated at least. But the reason they're in the "Obsolete" folder is because the math used for the internal calculations is ... not necessarily completely accurate as coded. And in practical use. When the engineers are dubious about the code in their own application ... I take notice.

 

So those latter two effects won't necessarily "break your pixels" but the engineers give no guarantee about it either. Hence, "Obsolete". And one day, they just won't be there anymore.

 

So ... my question back: what precisely are you doing to the image? After I know that, perhaps I can give better advice about how to go about it.

 

Neil

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