C-Log3 is Canon’s middle log profile — more range than C-Log2 gives up in noise, less aggressive than C-Log. It sits closer to a usable image than S-Log3 does, which makes the decode error easier to miss.
Canon R, C series
The conversion inverts the C-Log3 curve and applies Canon Cinema Gamut to Rec.709. Canon colour is the reason a lot of people buy these bodies, and it is exactly what a gamut-less conversion throws away: skin drifts orange and reds lose their separation.
Both halves live inside the .cube you download, so the conversion cannot be forgotten, applied twice, or stacked in the wrong order — the three ways log grades usually go wrong.
Stacking a creative LUT on top of Canon’s own conversion LUT. Two conversions is one too many; our .cube carries the decode and the look together.
C-Log3 looks closer to finished than any other log format, which is exactly why so much of it is graded wrong: the decode error is subtle enough to leave in. These eight bake the full C-Log3 and Cinema Gamut conversion — curve and gamut, not just the curve — into a single .cube, so one node takes you to the image Canon colour is bought for.
Because it has not been decoded yet. C-Log3 stores far more dynamic range than a normal picture profile by recording a flat, low-contrast signal — that is the point of it. A conversion to Rec.709 maps it back to an image meant to be looked at.
Not here. Pick C-Log3 as your footage type before you download and the C-Log3 → Rec.709 conversion is baked into the same .cube as the look, so it is one node in Resolve or one adjustment layer in Premiere.
Canon R, C series. If your camera records C-Log3, these conversions apply to it.
All 175 grades in the library can bake a C-Log3 conversion in — choose C-Log3 as the footage type before downloading and it is written into the .cube. The free conversions at https://ireelz.com/luts/free are authored for specific cameras, so use those if you shoot one of them.
Graded footage still gets claimed for its soundtrack. Original music with a licence in your name — start with the free tracks.