Leica L-Log support for color transform

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Aktenschrank

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Leica L-Log support for color transform

PostSun Nov 14, 2021 8:35 pm

Hi,

it would be incredibly useful (for me at least since I'm using the Leica SL2) if Resolve would support Leica L-Log natively for color transform etc. If only for convenience :)

Leica has published the transfer function and references here: https://en.leica-camera.com/content/dow ... ual_EN.pdf

Many thanks for your help and the great product you give the world!!
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waltervolpatto

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Re: Leica L-Log support for color transform

PostTue Nov 16, 2021 4:15 am

Aktenschrank wrote:Hi,

it would be incredibly useful (for me at least since I'm using the Leica SL2) if Resolve would support Leica L-Log natively for color transform etc. If only for convenience :)

Leica has published the transfer function and references here: https://en.leica-camera.com/content/dow ... ual_EN.pdf

Many thanks for your help and the great product you give the world!!


it is easier if you have someone that know how to build a DCTL to transpond the color space to another known. build something like

[rec2020/leika log - to - Arriwidegamut/ArrilogC]

and then applied that directly to the shot.
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waltervolpatto

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Re: Leica L-Log support for color transform

PostTue Nov 16, 2021 4:19 am

now, I see that is a 16 bit log container 2020 color space, you can actually simplify your life and do a straight color space conversion

rec2020/alexalogc - to - alexawidegamut/alexa logc no tone mapping, no white point adjustment

and just drop the 18%gray by about 5% with offset and then slap a standard arrilut on it: you should be in the ballpark.

do you have few frames of outdoor I can look at?
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Re: Leica L-Log support for color transform

PostFri Dec 03, 2021 2:58 pm

I'm looking for specs on L-Log too, that link seems to be broken, do you have the document?
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waltervolpatto

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Re: Leica L-Log support for color transform

PostFri Dec 03, 2021 8:12 pm

natjencks wrote:I'm looking for specs on L-Log too, that link seems to be broken, do you have the document?

The pdf should give you the info you need.
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Re: Leica L-Log support for color transform

PostMon Dec 06, 2021 4:30 pm

@walter, yes exactly, I am trying to get that PDF, the link above is broken / 404.
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waltervolpatto

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Re: Leica L-Log support for color transform

PostTue Dec 07, 2021 5:53 pm

natjencks wrote:@walter, yes exactly, I am trying to get that PDF, the link above is broken / 404.


Oh, it did open for me last time i tried…
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Charles Bennett

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Re: Leica L-Log support for color transform

PostTue Dec 07, 2021 10:57 pm

On the 404 page just click on the left-hand Home box. It will take you to the Leica home page.
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Re: Leica L-Log support for color transform

PostWed Dec 08, 2021 12:25 pm

Found this on LGG today:
https://liftgammagain.com/forum/index.p ... gin.16522/

But, yeah, dude wants money.

IMHO it'd be up to Leica/BM to implement that support (not that I need it) ;-)
Last edited by cayubal on Wed Dec 08, 2021 4:43 pm, edited 1 time in total.
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waltervolpatto

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Re: Leica L-Log support for color transform

PostWed Dec 08, 2021 3:52 pm

can someone give me few frames i can play with?
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