Cinestyle LUT for 5D

[Dermot Shane]

I have it in .txt format, the same format as Iridas use, can you use that?

i used DS’s Lut builder to create it from a transform in Color

d/

[Mike Most]

I take it what you mean is a LUT to put the log type Cinestyle material into a proper video gamma space. You can do that yourself by making an S-shaped custom curve. Without having dealt with Cinestyle material, my guess is that the curve is somewhat akin to Cineon, so if you want a LUT, you could probably make a LogC to Video LUT using Arri’s online LUT builder that would be at least somewhat representative.

[Dermot Shane]

I’m assuming we are talking about the Technicolor gama curves & LUT’s for Canon cameras? yes?

the significant diffrence i see is that with a canned LOG to 709-D65 LUT is the skys had a cyan tinge, and with the techniclor LUT the sky’s are a fluffy blue, skin tones are not far apart, and the shadows are a bit more blocked up in the standard LUT.. nothing that cannot be recovered, but a better starting point (unless you want cyan sky’s & chunky blacks)

d

[Mike Most]

Hmm. Sounds like they’re their adding their own color matrix in addition to the gamma transform. I’m assuming that Technicolor’s is a 3D LUT – it would have to be if they’re implementing a matrix.

[Blase Theodore]

I’m a little confused actually. They offer an mga and txt LUT. The txt is clearly a 1d lut, but the mga seems like a 3d LUT. I always assumed mga was 1d.

https://www.technicolor.com/uploads/s-curve_for_cinestyle.mga.zip

Supposedly you could convert it from .mga using LUTBuddy (free), though I haven’t tried it yet.

https://www.redgiantsoftware.com/products/all/magic-bullet-lut-buddy/

If it works, please report back.

[Margus Voll]

i managed to make some conversion but i’m not sure if it works like it suppose to work.

maybe i’m doing the add lut somewhat wrong.

—

Margus

https://iconstudios.eu

[Blase Theodore]

How did you convert it?
What format did you convert it to? (definitely done in 3d, not 1d, to a 3d lut right?)

Do you have a clip shot with the technicolor firmware you could upload? I’ll give it a shot on my end too.

[Marcus Smith]

I have a version for Davinci. Please email me if you need it.

marcusjhs at gmail.com

[Dermot Shane]

I used a utility that is bundled with Avid DS, called “LUT builder”,
– i exported a 16bit TIFF of a frame that it generates
– had it injested into Apple Color
– the colorist there applied the LUT, rendered out a 16bit TIFF from the transformed frame
– i injested the transformed frame back into LUT builder, and it generates a 64×64 3D LUT

The footage is not likely to be allowed to be posted in the interwebnet, from past experiences with these producer’s.

The accuracy of the LUT was only confirmed by seeing identical pixel values with the picker’s in both systems.

We didn’t make a huge deal about accuracy as it’s an input LUT to be a base to start from, not a output LUT that HAS to match a known display

I do not know what one of the two LUT’s the Color artist used to generate the transformed image.

d

[Margus Voll]

I did put up my shots and my converted luts.

please see:

there is 3 shots.

1 looking to sea … see the sky part specially and leaves in front of the camera

2 and 3 are the same spot with different iris setting

and i also included original technicolor and some converted versions that i did

https://www.iconstudios.eu/cinestyle.zip

—

Margus

https://iconstudios.eu