loper

Loper · Camera files

Open .cube files on your Mac.

.cube

Canon's official Canon Log conversion LUTs: header keywords, then R, G and B in their channel colors.

Loper is a free, minimal editor for macOS that opens Canon Log LUT instantly and colors every part of the file, so you find the value you need at a glance and can fix it right there. No IDE, no project to load, no gray wall of text.

Download Loper – freeAll formats
BT709_CanonLog3-to-BT709_WideDR_65_FF_Ver.2.0.cube opened in Loper: Canon Log LUT with color-coded LUT (cube, 3dl)
Show the file as text
TITLE "Canon Log 3 to BT.709 Wide DR"LUT_3D_SIZE 65DOMAIN_MIN 0 0 0DOMAIN_MAX 1 1 1 0.000000 0.000000 0.0000000.015625 0.000000 0.0000000.031250 0.004211 0.000000

How to open .cube files

  1. Download Loper (free, Apple silicon, signed and notarized) and move it to Applications.
  2. Double-click your .cube file, drag it onto the Loper window, or right-click it and choose Open With › Loper.
  3. Want every .cube file to open in Loper? Choose Loper › Make Loper the Default Editor….

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