Log conversion · .cube

HLG to Rec.709

HLG is not a log profile — it is an HDR delivery format — but it lands in the same place in practice: you have footage that looks wrong on a normal timeline and needs converting to Rec.709 before anything else.

HDR footage — Sony, Canon, phones

Browse HLG gradesDecode baked in · .cube

What a correct HLG conversion does

Our decode inverts the HLG transfer function and maps BT.2020 to Rec.709, which is a tone-mapping problem as much as a colour one: HDR highlights have to be brought into a range Rec.709 can actually show, without flattening everything below them.

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.

The mistake to avoid

Mixing HLG and SDR clips on one timeline without converting. They will never match, and colour-managing the timeline after the fact is far more work than decoding on the way in.

Using HLG with any pack

No pack here is authored specifically against HLG footage, but every grade in the library can carry its conversion: choose HLG as the footage type in the LUT Library and the decode is written into whichever .cube you download. If you want a starting point, the free conversions show what a neutral decode should look like.

Applying it in your editor

Common questions

Why does my HLG footage look grey and washed out?+

Because it has not been decoded yet. HLG 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.

Do I need a separate conversion LUT and then a creative LUT?+

Not here. Pick HLG as your footage type before you download and the HLG → 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.

Which cameras record HLG?+

HDR footage — Sony, Canon, phones. If your camera records HLG, these conversions apply to it.

Which LUTs can I use with HLG?+

All 175 grades in the library can bake a HLG conversion in — choose HLG 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.

New to thisWhat a LUT is, and what it can’t doWhy log looks grey, how the decode works, and the interpolation error we measured on our own files.Read it →

Music for the edit

Graded footage still gets claimed for its soundtrack. Original music with a licence in your name — start with the free tracks.

Other log formats

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