Hi guys! I'm trying to learn how to use the cops to edit my renders but when I add a copy channel node after importing my exr file with aov and then adding a color correct node nothing happens if I change colors or anything its the same, Im I setting something wrong? here is a ss.
Adding a brigthness nodes makes some changes but adding the color correct node directly doesn't make anything too.
I made the render in Arnold using solaris and adding tha AOV they appear in the top selection tap along with the rgb, etc.
Thanks a lot!
COPS not working
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- RicardoNeri98
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- jsmack
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Your render is formatted incorrectly. It should come in with the beauty named 'C' and alpha named 'A' rather than a single four component channel named RGBA. Fixing it in COPs is a huge pain as it really doesn't like working with four component layers. This is probably a bug in Arnold, although I thought husk handled image formatting when rendering with solaris.
You can try to straighten it out with a channel copy node. Copy the r, g, and b components of RGBA to a new layer named 'C', and the a component to a new layer named 'A'.
You can try to straighten it out with a channel copy node. Copy the r, g, and b components of RGBA to a new layer named 'C', and the a component to a new layer named 'A'.
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- RicardoNeri98
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- jsmack
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RicardoNeri98
Hi I checked the AOV section in Arnold yes it’s labeled as RGBA but from where it picks the color Channel it’s set as “C” the AOV show properly in the top tab but when selecting any or even none the cc node won’t work but others will
Right, that's why it doesn't work. The color correct is expecting a three component channel named 'C'. You can point it to RGBA instead, but by default it only applies to C.
COPs works better with the beauty named 'C'
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- RicardoNeri98
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Hi Thanks for the help! I tried splitting the channels but I'm sure Im making it wrong.
Here are the Options of the Target that I have so I picked the RGBA.R to pick the red channel and then in source INPUT 1 RGB R
Here is the result:
Then I added a Layer Node and then named it C, I did the same for A.
But I suppose that after all of this if I add a new Channel copy node the C should appear in my options? that is the mix of the all RGBA if thats the case It does'nt appear in the new channel node.
Here are the Options of the Target that I have so I picked the RGBA.R to pick the red channel and then in source INPUT 1 RGB R
Image Not Found
Image Not Found
Here is the result:
Then I added a Layer Node and then named it C, I did the same for A.
Image Not Found
But I suppose that after all of this if I add a new Channel copy node the C should appear in my options? that is the mix of the all RGBA if thats the case It does'nt appear in the new channel node.
Edited by RicardoNeri98 - Oct. 24, 2023 22:00:58
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- jsmack
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RicardoNeri98
But I suppose that after all of this if I add a new Channel copy node the C should appear in my options? that is the mix of the all RGBA if thats the case It does'nt appear in the new channel node.
The layer node does not create image planes, it's for compositing, e.g. A over B etc. When adding image planes they should appear in the list on channel copy as well as in the info for the node. The channel copy can create planes as well as copy if you pick "New Plane:" from the target list. Although not both at the same time because of course not. Use a second Channel copy to copy the planes one at a time. The Color node can also create new arbitrary image planes if you know the new image plane syntax.
Planename{channel1, channel2, channel3}:pixelformat (pixelformat being one of i8 i16 i32 f16 f32)
for example:
C{r,g,b}:f16
N{x,y,z}:i8
Edit:
Btw, you can change the scope on the color correct node to work with the RGBA plane, it's just annoying to have to do so on every node, hence my suggestion to rename it.
Edited by jsmack - Oct. 25, 2023 23:29:52
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- RicardoNeri98
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