To add our Alexa LUT to Nuke Studio, we need to create our own custom OCIOConfig. Just like everything in Nuke Studio, am I right? For you, this process is going to be a little more work. That means setting the 'colorspace' on our Write node to 'AlexaV3LogC', regardless of the file format. Set your 'in' to 'linear' and your 'out' to 'AlexaV3LogC'Īnd, just so we're clear, if we're working on an Alexa colorspace clip, as a Good VFX Artist, we're going to send back a render that is also in Alexa colorspace.After the OCIOFileTransform node, add an OCIOColorSpace node.Leave the 'direction' on 'forward' and 'interpolation' on 'linear'. Set your 'working space' to 'AlexaV3LogC'.

Create a OCIOFileTransform node and add the downloaded LUT file.

To get started, create a new Nuke project. If, however, you also use Nuke Studio or Hiero, you'll want to ignore this section and skip ahead to the OCIOConfig version. If you only use Nuke/NukeX, adding the Input Process is relatively simple, and bares a striking resemblance to a lot of the Defaults customization we've done in the past.

You can download it here, or build your own with Arri's online LUT generator. No, this is not the same LUT that comes with the application. The first thing we're going to need is the Alexa Viewer LUT. But we don't want to bake that Rec709 conversion into our render, we just want to view it in the corrected colorspace. We could toss a OCIOColorSpace node at the end of our script and work in between it and our Read. There is no built-in Viewer Input Process to properly view Alexa footage. In DaVinci Resolve, these 2 steps are performed at the same time. The footage gets its gamma linearized in the Read node before work is done, then, after our work has been added, the footage needs to be converted to Rec709 colorspace. The Alexa's LogC footage needs to be gamma corrected and tone-mapped to a Rec709 colorspace.

Arri embedded lut davinci resolve