Latest post Wed, Jan 24 2018 8:50 PM by jef. 2 replies.
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  • Tue, Jan 23 2018 3:06 PM

    • jef
    • Top 50 Contributor
    • Joined on Sun, Feb 26 2006
    • Maryland
    • Posts 3,373
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    When did LUT level change issue occur?

    I remember there was a point in the recent software releases where from one version to another the way LUTs affected video changed visually.  I can not find out when that occured.

    I need to know as I am seeing just such an issue with footage load on our systems in 8.5.3 but being used in an 8.9.4 test system.

    Thanks for any help.

    Jef

    EDIT:

    I just surfed through some of my collected ReadMe files and here is what I found:

    8.6.2

    Bug Number: MCCET-1312. Before Media Composer 8.5, imported LUTs (those installed by you from the “Color Management Settings”) considered the LUT domain 0 to 1.0 as full range (0-1023). This should not have been like this since Media Composer has a black and white point at video levels (64-940). This was fixed in 8.5. 

    However, this created a problem (in 8.5) for installed LUTS (the ones we ship Media Composer with such as “Sony Slog3 to 709”) where you needed to add a scaling from “Full Range to video levels” before the LUT in order to get the same result as in 8.4.5. This was fixed in 8.6.2. 

    8.6.3

    Bug Number: MCCET-1312. Applying a Color LUT level appeared different from one version of the editing application to another. 

     

    =====

    I guess this does not really clear things up for me as I created media in the middle of this mess.

    Avid DS 11.0.2 R.I.P | MC "Well, it depends ..." mostly 8.10.0 but playing w 2018.11| OS 10.11.x - various MacPro Towers - home system MacPro... [view my complete system specs]

    _____________________________________________

    Jef Huey

    Senior Editor

    Old Stuff  http://vimeo.com/album/3037796

  • Wed, Jan 24 2018 10:36 AM In reply to

    • Glenno
    • Not Ranked
    • Joined on Wed, Nov 19 2008
    • Posts 83
    • Points 1,120

    Re: When did LUT level change issue occur?

    According to my testing LUTs had various problems with levels between v8.5.0 and 8.6.2. Levels are correct in all versions from 8.6.3 to the latest (18.1). Version 8.4.5 all the way back to 8.3.0 are also good.

  • Wed, Jan 24 2018 8:50 PM In reply to

    • jef
    • Top 50 Contributor
    • Joined on Sun, Feb 26 2006
    • Maryland
    • Posts 3,373
    • Points 40,745

    Re: When did LUT level change issue occur?

    Thanks.  Confirms my fears.

    Jef

    Avid DS 11.0.2 R.I.P | MC "Well, it depends ..." mostly 8.10.0 but playing w 2018.11| OS 10.11.x - various MacPro Towers - home system MacPro... [view my complete system specs]

    _____________________________________________

    Jef Huey

    Senior Editor

    Old Stuff  http://vimeo.com/album/3037796

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