Coming Windows

LUTForge

Generate 3D LUTs from image pairs

LUTForge turns a before/after image pair into a 3D LUT: it learns the grade from your example and exports a standard .cube file, with JSON sidecar metadata, in the Adobe/IRIDAS format used by post-production and colour-grading programs. It stands on its own, and it is the companion to ChromaBlender; both make their home at chromablender.com.

Visit the official site
LUTForge application window

Who it is for

LUTForge is for people who have already found a look and now need it to travel: to the rest of a shoot, to a different program, or to someone else on the job.

  • Colourists and post-production professionals

    Hand the finished look over as a standard Adobe/IRIDAS .cube file. When the tonal transitions have to hold, Pro brings 33³ and 65³ grids and tetrahedral interpolation.

  • People who shoot both stills and video

    Build the look on a single before and after frame pair, then carry it into the program where the footage gets finished.

  • Photographers with a look of their own

    Hold the same tone across an entire shoot from one LUT, instead of rebuilding the same settings frame by frame.

  • Retouchers matching a set to one approved edit

    Given a single sample the client has signed off on, LUTForge derives the transformation straight from that pair, so the rest of the set can follow it.

  • Small studios that need a look to become a file

    A grade turns into something you can archive, hand over and reuse, and the JSON sidecar keeps a record of what the LUT actually does.

  • People who build LUT packs for others

    Whichever grid size you pick, the export is a clean .cube in the format post-production and colour-grading programs read.

What it does

  • LUTs from image pairs

    Feed it a before/after pair; LUTForge derives the transformation as a 3D LUT you can reuse anywhere.

  • 17³, 33³ or 65³ grids

    Basic ships the standard 17³ grid (4,913 nodes). Pro unlocks 33³ high-res and 65³ ultra grids for the finest tonal curves, and all of them export clean .cube files.

  • Tetrahedral interpolation

    Pro uses Sakamoto tetrahedral interpolation for cinema-grade accuracy. Basic uses trilinear.

  • Industry-standard export

    Writes the Adobe/IRIDAS .cube format used by post-production and colour-grading programs.

  • JSON sidecars

    Export the colour logic alongside the LUT as JSON metadata, for easier pipeline integration and record-keeping.

  • Preview before you commit

    Compare the original and the graded image in real time before you export, and apply preset LUTs to your images inside the app.

Good to know

  • One-time payment, lifetime licence. There is no subscription.
  • Basic and Pro each cover one PC. Pro adds the 33³ and 65³ grids, tetrahedral interpolation, and priority support.
  • A 14-day trial covering the full Pro feature set is started from inside the app, and asks for no credit card.
  • Licences are machine-bound and work offline; they need to reach the internet about once every 30 days to stay verified.
  • Runs on Windows.

Visit the official site

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