The converter:
For professional accuracy, you need software that decodes the XMP math directly.
1. Lattice (Industry Standard) Lattice reads the ICC/ DCP profile inside the XMP and converts the mathematical transform into a 3D LUT. It allows you to set the input color space (e.g., ProRes 4444) and output color space (Rec.709). xmp to cube converter
2. 3D LUT Creator This software has an "XMP to LUT" wizard. It analyzes the delta between the original and the XMP-adjusted image to reverse-engineer the look.
3. Image-Line (Converters.io) There are online SaaS tools (like Convertio or XMP to Cube converters) that run on server-side logic. Warning: Never upload proprietary or client raw files to a public web converter. The converter:
For a grid size ( N ), the input RGB coordinates are:
[ r = \fraciN-1,\quad g = \fracjN-1,\quad b = \frackN-1 ] where ( i,j,k \in [0, N-1] ). For professional accuracy, you need software that decodes
Each input RGB vector is transformed by the XMP’s internal color pipeline (including exposure, curve, HSL, calibration). The resulting RGB is written to the CUBE.
| Aspect | Details | |--------|---------| | Bit depth | Assumes 16-bit (0–65535). 8-bit XMPs may need manual scaling factor adjustment | | Color order | Assumes Adobe BGR → standard RGB. Some XMPs are already RGB; check results visually | | 1D LUTs | Not supported – only 3D LUTs (size ≥ 2) | | Compressed XMP | Not supported – extract from preset first | | Metadata | Cube files only store LUT data; all other XMP metadata (camera settings, etc.) is lost |
💡 Verify your LUT: After conversion, test the
.cubein Resolve or any LUT viewer before final use.
An XMP profile works in 32-bit floating point inside Lightroom. A standard Cube LUT is often 10-bit or 8-bit. Every conversion loses data. You will see "banding" (visible steps in gradients) if you are not careful.