Mark Driver

What I do in these situations is keep my timeline at 1920x1080 then on my 9:16 version I'll put a crop on it with the 0.5625 aspect ratio so I can do all the reframing. and see what it will look like at 9:16, but still in a 16:9 frame. For export you have two options. First is to export from the 1920x1080 timeline and define in the Output Scale that you want a 1080x1920 output and use Fit Y to make sure the aspect ratio of the footage correctly adapts to your export aspect ratio. This is the easiest solution, but has a drawback as the vertical resolution of the output is bigger than the vertical resolution of the timeline, so you will be scaling the footage up. If it was shot HD originally then that's no problem as you don't have any choice in the matter, but if it was shot larger then you will be losing quality that was there to begin with. In this case I'd recommend working in a 16:9 timeline that has a vertical resolution of 1920 (something like 3413x1920). This will allow you to use the maximum vertical resolution of your footage (so you're just scaling from the shoot resolution to 1920, not scaling it down to 1080 then back up to 1920). By keeping the timeline 16:9 instead of changing to a 9:16 timeline, you can keep your original grade and not have to worry about anything. When you start changing timeline aspect ratios any shapes in your grade start going off, so this is to prevent you from having to redraw and track all your shapes. I hope this makes some semblance of sense.

It's a great way to get through difficult conforms (especially when editors use mixed frame rate stock footage). Just remember to watch your transitions and dissolve your colour grade through them!

What I've done to make a 3D lut from a mistika grade is to export the LUT Test pattern from Fusion, bring it into Mistika, apply the grade, re-export it at the same resolution (198x198), load it back into Fusion (Resolve), then use the LUTCubeAnalyzer to create a Lut (ALUT3, ITX or 3DL). Then, if I need to, I use a 3rd party converter (Lightspace in my case) to convert the Lut to .cube or whatever. It's a bit of a process, but it works. FusionTestPattern.exr

If you're interested specifically in frequency separation there's a tutorial here that shows how to build that in Mistika. On the whole, however, I agree with you. It would be nice to have deeper dives into specific things. With the increase in users from Boutique I'm sure we'll see more and more tutorials popping up not only from SGO, but from users themselves. I've been using Mistika for 16 years and there are still things that pop up occasionally where I'm like, "Oh, I didn't know it could do that."