Attila Bakos

It's an old i7-3770. One of the reasons I use Matlab is that many of it's commands are internally multi-threaded, it saves me a lot of time, especially with this old machine.

Yeah, it's pretty far from being accurate. I wonder how they do their conversions on the fly, and what precision they use. When I build my camera matching LUTs it takes 1-2 minutes with all cores used to the maximum to build a size 65 LUT, they do it in a second or so.

I just tested it on some Sony A6300 S-Log2/S-Gamut3.cine and Fuji X-T3 F-Log/F-Gamut clips and if you're after a precise conversion, the results are far from great. It can still be a timesaver though.

Looks like they got inspired by 3D LUT Creator: https://youtu.be/UxZxFWmTYg8

Just finished a new tool, it does what the title says. It's in beta, bugs are possible. [CLICK HERE] Fuji just released the Bleach Bypass LUT, which has some weird transitions, so I'll use it as a demonstration. This is the stress test image I'll use: See what happens when you apply the Bleach Bypass LUT: Now I use my tool in "box" mode with 1 iterations to create a new LUT: This is "box" mode with 5 iterations: More details on the site.

A simple LUT smoothing fixes it, it's easy to do in Matlab, but I couldn't create an online version yet. It's on the todo list

It seems this LUT is not up to Fuji's standards, it has a few weird transitions:

FLog uses the color space defined by Rec.2020.

You are right, and you are a gentleman, because you didn't mention, that for ultimate precision your LUT is still the way to go. A matrix can get you close when you're lucky, but to transform all the color tweaks of a manufacturer, a 3D LUT is still the way to go.

It's amazing how close you can get with a simple matrix, as you really need some luck too, given how matrices work.

European price: FUJI X-T4 1.799 Euro FUJIFILM X-T4 + FUJINON XF18-55mmF2.8-4 R LM OIS 2.199 Euro FUJIFILM X-T4 + FUJINON XF16-80mmF4 R OIS WR 2.299 Euro

Nice work, although 14000 data points sounds like overkill to verify a 3x3 matrix

Try exiftool. I believe that there's a FilmMode tag that has the info you need.

I can see why he needs raw, wb is totally off

I think I'll buy the X-T4 so I'll add Classic Neg to the Colorizer X-T3 F-Log LUT Pack, IF Fuji didn't change F-Log implementation again. But I hope it comes to the X-T3 as well, I'd like to have it on photos straight out of cam.