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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

REDLogFILM > Rec.709 LUT - Anyone have one? Made one? Graeme?

Elliott Balsley said:
Does anyone know how to convert a .3dl file to something Resolve can handle? Someone please let me know if that is an absurd request or if it's possible.
Click to expand...

If you have Photoshop CS6:
Import Resolve's Trim_LUT0.DPX file into Photoshop
Add a LUT Layer
Choose the .3DL LUT
Flatten the image
Save changes to the file
Import to Resolve
Choose the option to Generate Lut from Current Grade.

edit: make sure to turn off your Photoshop color management settings so the file isn't converted on import.
 
Mike Lary said:
If you have Photoshop CS6:
Import Resolve's Trim_LUT0.DPX file into Photoshop
Add a LUT Layer
Choose the .3DL LUT
Flatten the image
Save changes to the file
Import to Resolve
Choose the option to Generate Lut from Current Grade.

edit: make sure to turn off your Photoshop color management settings so the file isn't converted on import.
Click to expand...


Mike,

This is a great, simple way to do it! Thanks a lot...!
 
Mike Lary said:
If you have Photoshop CS6:
Import Resolve's Trim_LUT0.DPX file into Photoshop
Add a LUT Layer
Choose the .3DL LUT
Flatten the image
Save changes to the file
Import to Resolve
Choose the option to Generate Lut from Current Grade.

edit: make sure to turn off your Photoshop color management settings so the file isn't converted on import.
Click to expand...

Easiest way ever!, but works only for Resolve? what if you want to use or export the LUT to another format/program?.. Sorry, I am not familiar with Resolve..
 
Last edited:
Mike, I tried that method in Photoshop, but it didn't work. When I apply the newly created LUT in Resolve, it just makes the image a tiny bit darker (like 1%) than with no LUT. I started with a couple of Autodesk's Kodak conversion LUTs, and the results are the same with both of them. In Resolve, I am using REDlog Film. I must be doing something wrong.
After I bring the flattened DPX into Resolve, I right-click it in the Color page, and hit "Generate 3D LUT". Is that right?

Also - when using REDlog Film, what does everyone like to use for the color space? There are a lot of options, including Rec 709, REDcolor3, RGB, etc.
 
Elliott Balsley said:
Mike, I tried that method in Photoshop, but it didn't work. When I apply the newly created LUT in Resolve, it just makes the image a tiny bit darker (like 1%) than with no LUT. I started with a couple of Autodesk's Kodak conversion LUTs, and the results are the same with both of them. In Resolve, I am using REDlog Film. I must be doing something wrong.
After I bring the flattened DPX into Resolve, I right-click it in the Color page, and hit "Generate 3D LUT". Is that right?
Click to expand...

Hi Elliot,

I'm using Resolve 8, so the method is a little different. In version 8 you need to click on the trim LUT file on the Color timeline, then go to the Config tab, LUTS tab, 'Generate LUT from Current Grade' section, enter a name in the field, then click 'Generate LUT'. It looks like version 9 simplifies that with the 'Generate 3D LUT' option. In either version you should be able to add the new LUT in your project's LUT preferences or directly to a node.

I'd be happy to run your LUTs through my process and send them back to you converted if you want to compare results. Just shoot me a PM and I'll give you my email address.
 
I have question, since you guys know more than I do, about Resolve. Can I run it on my laptop?? or perhaps I need special hardware for that??, It crashes every time I try. The software ask for CUDA software acceleration update, anyone??
 
Pablo Moreno said:
I have question, since you guys know more than I do, about Resolve. Can I run it on my laptop?? or perhaps I need special hardware for that??, It crashes every time I try. The software ask for CUDA software acceleration update, anyone??
Click to expand...

Saying "Can I run it on my laptop??" Is like saying, can my car go 150 Mph? Knowing the car make and what's under the hood may get you an answer.
But what does this question has to do with the subject of this discussion thread?
 
Pablo Moreno said:
Gosh! why I have to deal with people like you in this forum.. If I am asking, is because it says that it runs with special hardware, BUT ALSO with a SPECIAL SOFTWARE ACCELERATION DRIVER called "CUDA". Just answer the dammed question, or let someone else to do it without been such an asshole..


EDIT: And yes, the question it has to do with the thread, don't you read?, we are trying to convert LUTs from different formats to work with Resolve.
Click to expand...

You're new here, aren't you? Gosh, no, you don't have to deal with an "asshole" like me, just ignore my post and carry on with your exemplary behavior...
 
Elliott Balsley said:
Mike, I tried that method in Photoshop, but it didn't work. When I apply the newly created LUT in Resolve, it just makes the image a tiny bit darker (like 1%) than with no LUT. I started with a couple of Autodesk's Kodak conversion LUTs, and the results are the same with both of them. In Resolve, I am using REDlog Film. I must be doing something wrong.
After I bring the flattened DPX into Resolve, I right-click it in the Color page, and hit "Generate 3D LUT". Is that right?

Also - when using REDlog Film, what does everyone like to use for the color space? There are a lot of options, including Rec 709, REDcolor3, RGB, etc.
Click to expand...

Start with red log film and balance your picture and make sure it's somewhat centered in your histogram then apply the kodak stuff. the kodak log2lin converts it to REC 709. The other ones are also nice they stay in log an let you apply more colorgrading before you flip it to lin.
 
Nice post, i'm kinda new to color correction and I'm still trying to get all the ideas in the right place...
Is there some book/link that can explain more about this topic (LUT and why use them?)

What's the difference between set RedGamma 3 in REDCine-X vs set REDlogFilm and them apply a LUT?
 
Honestly, a LogC to Video LUT made using Arri's tool is going to be very, very close, to the point where anyone who isn't an experienced colorist is going to see a very satisfying result. I do, and I AM an experienced colorist. Just make sure you build the LUT without a color matrix (in other words, LogC to Video, Extended range on both source and destination, and NO color matrix). The mistake many people make is choosing the Rec709 color matrix in the Arri tool. This is appropriate for Alexa material, but not needed or wanted for Red material, which already has a color matrix applied (that's what Redcolor1/2/3 is).
 
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