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Danny Luksa
Known Participant
October 28, 2024
Question

I don't want my footage imported with LUTs

  • October 28, 2024
  • 2 replies
  • 1778 views

We need a way to disable the automatic LUT that is applied every time I ingest footage from an Arri Alexa/Amira/Alexa Mini. Stripping the lut from these clips every time they're imported is very tiresome.

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2 replies

R Neil Haugen
Legend
October 28, 2024

I don't know why people assume LUTs are being used for this. I mean, in 2019, yea woulda been a LUT.

 

But folks, those limited things are ancient tech. They use an actual mathematical process now for transform work, vastly more capable than some idiotic look up table. That's just a text chart, this pixel triplet goes here. No math involved.

 

And unless your field produced media was shot using the exact same scene contrast and exposure as used in creating the LUT, you have to be able to trim the clip prior to the LUT or risk clipped or crushed data.

 

So IF you are setting up the new color management to actually manage your log media in Premiere, the input transform is via algorithms designed for that camera’s media.

 

And will not clip or crush values.

 

And simply by setting the working space to a wide gamut option, you can work with any source clips in sequences set to either HDR or SDR for display and output use.

 

For most users, that is a far better start than any input LUT, including from the camera maker.

 

For some advanced professional workflows involving pass-through to the colorists, it is useful to turn off all Premiere CM. With one control, that says do not manage.

Everyone's mileage always varies ...
Danny Luksa
Known Participant
October 29, 2024

Hi @R Neil Haugen. While I appreciate the condescending tangent, I am very much talking about a LUT as labeled in Premiere Pro 2025.

 

Admittedly I don't know much about Premiere's color management tools — I don't really care about them. I edit everything as it was shot, in log. Colorist will make it look pretty.

 

Just looking to make one step of my editing process more efficient, instead of stripping the LUT (yes, the LUT from 2019) from the Modify Clip panel.

R Neil Haugen
Legend
November 11, 2024

Danny, you have a higher end situation than the vast majority of users 'here'. My response was based on the 'normal' user's needs. 

 

And yes, you have specific and proper needs. The new head of color for Adobe's pro video tools is noted colorist/author/provacateur Alexis Van Hurkman. And he's been able to get something I despaired of really getting done in Premiere "soon-ish", in a massive and needed rebuild of the underlying color processes.

 

I give him great credit for getting those changes both approved from "above", and done by his staff. 

 

That said, yes, there are several things that do need changing still. And working with the high-end Arri files is one area that seems to need improvement.

 

Alexis has several posts on the public beta forum on color. I heartily suggest going over to that forum, and posting to him. He does respond there. 

 

And all posts on the public beta forum are read by the devs staffers of the variuos teams.

Everyone's mileage always varies ...
jamieclarke
Community Manager
Community Manager
October 28, 2024

Hi @Danny Luksa - If you are working on version 25 of Premiere Pro then you can navigate to the Lumetri Panel and open the settings tab, then under Project there is a checkbox labeled "Auto Detect Log Video Color Space" you can check that off then the media you import will be interpreted as Rec709.  This setting is also available in the Project Settings under Color

Danny Luksa
Known Participant
October 29, 2024

Hey @jamieclarke... thank you for the response, unfortunately this does not solve the issue. The embedded AMIRA LUT is still present on every single video file from our Arri Amira or Alexa Mini cameras, and still requires manual stripping through the modify clip panel.

jamieclarke
Community Manager
Community Manager
October 29, 2024

Hi @Danny Luksa - There is not a preference to remove the embedded lut, the only way is to select the dropdown menu and choose "None"