FILMIT — Look LUT Builder

FILMIT — Look LUT Builder Reverse engineer a look from a graded image and export a .cube

Mode

Choose

Single image tries to infer neutral Rec.709. Pair mode lets you provide a Rec.709 source and its graded version directly.

Inputs

Choose graded image None

Auto estimation options (single image)

Assumption strength

Neutralize white balance

Normalize contrast + gamma

Reduce saturation bias

Suppress global hue cast

Higher strength pushes the estimate harder toward typical Rec.709 statistics (WB, contrast, gamma, saturation, hue cast).

Fitting

Model

Samples

Ridge λ

More samples improve accuracy but take longer. Ridge adds stability.

Export

LUT size

The LUT maps Rec.709 source to the graded look.

Self tests

Verifies DOM, identity fit, and known transform recovery.

Ready

Heads up: deriving a universal LUT from a single graded image is an approximation. Results are best with varied tones and colors or, ideally, a known source/graded pair.

Preview Left is the estimated source. Right is the graded target used for fitting.

Idle

Shortcuts: F fit, D download

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