Latest post Tue, Sep 20 2016 4:40 PM by RalphC. 20 replies.
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  • Wed, Feb 10 2016 11:49 PM

    Colour change after 8.5 install (LUT issue?)

    Hi all,

    After our upgrade from the previous version to 8.5 we have noticed that our output colourspace has shifted unpleasantly. 

    We are using Sony FS7 SLOG2 and SLOG3-CINE-L footage with standard LUTs we have created in LUTCALC and used for many months. The LUTs haven't changed.

    The problem occurs across all SLOG material played from the timeline. It's considerably shifted, obvious to the naked eye. 

    We have tried reinstalling, and removing/reapplying the LUT with no effect.

    Anyone else seeing (or definitely not seeing) this issue?

    Thanks!

    Tony

    UPDATE: The best testing procedure we have found is to load a project for which you also have a master made with a previous AVID version. AMA link to the master and load it into the source monitor, and match a frame with the same image with LUT applied coming off the timeline. For SLOG2 the difference is immediately obvious (wholesale colour shifts), for SLOG3 its a more subtle crushing of the blacks and blowing out of highlights (though both still show legal on the waveform monitor).

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  • Thu, Feb 11 2016 1:31 PM In reply to

    • BarkinMadd
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    Re: Colour change after 8.5 install (LUT issue?)

    Just to be clear, can you confirm that this problem was not observed in 8.4.x ?

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    Steve

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  • Fri, Feb 12 2016 3:39 AM In reply to

    Re: Colour change after 8.5 install (LUT issue?)

    Yes, correct.

    If we load a project we cut in 8.4 the colours are visibly off. If we AMA to the master of the same project and put it in the source window they are visibly different to what comes off the timeline.

    Tony

     

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  • Fri, Feb 12 2016 8:20 AM In reply to

    • frediko
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    Re: Colour change after 8.5 install (LUT issue?)

    Hi, definitely seeing the exact same issue here.

    Others too: http://community.avid.com/forums/t/137634.aspx

    I can open old master sequences with rendered top layers and see the immediate big change in levels/color when viewing unrendered segments with Color LUT effect applied. I'm seeing it for c-log, s-log 2 and s-log 3. Project is 1080i/50 in YCbCr 709.

    I haven't read any ducumentation about changes to the Color LUT effect.
    So that's a no-go for 8.5 as of now. Back at 8.4.4 waiting for patches to 8.5.

    Fred

     

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  • Sun, Feb 14 2016 8:42 PM In reply to

    • DIESELE
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    Re: Colour change after 8.5 install (LUT issue?)

    Guys have you logged this with Avid as it sounds like a big issue for those of us with FS7's.  Thanks

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  • Sun, Feb 14 2016 10:58 PM In reply to

    • DStone
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    Re: Colour change after 8.5 install (LUT issue?)

    I sent a note up the line about this (so Marianna et. al. are in the loop on this).

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  • Tue, Feb 16 2016 4:51 AM In reply to

    • Natisyahu
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    Re: Colour change after 8.5 install (LUT issue?)

    Talked with the support centre about this today. Have sent the technicians example comparison media, our standard SLog2 LUTs, and project/settings. 

    Hopefully they can come up with a solution pronto.... As we can't export anything in 8.5 with this problem!

     

     

  • Tue, Feb 16 2016 9:42 AM In reply to

    • DIESELE
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    Re: Colour change after 8.5 install (LUT issue?)

    Great work guys - my Slog3 shoot is next week so heres to a fix soon YesBig Smile

    Symphony 2018.12.10, Blackmagic Intensity Pro 11.1 (unsatisfactory in full res UHD though for client monitor), WIN 10 on 2500Mbps M.2 SSD, Nvidia Quadro K4200, Asus X99-A Mobo, i7 5820K 4.0 GHz Hex core mildly overclocked CPU, 32Gb 2800 Mhz RAM, WD Black 8Tb RAID10 array @ 450Mbs

     

     

  • Wed, Feb 17 2016 9:08 PM In reply to

    Re: Colour change after 8.5 install (LUT issue?)

    Hi all,

    Just updating you all that this issue is under active investigation by avid engineering, but is not yet resolved.

    It seems likely from the feedback I have received to date that this issue affects ALL log-based workflows, perhaps universally, and effectively prevents colour-accurate output from Avid.

    Its therefore going to be a show-stopper for many users. If Avid cannot fix it very soon we will be reverting back to the previous version, and I would advise other users who haven't yet updated to 8.5 to hold off until this problem is resolved.

    We will keep this thread updated as things develop.

    Tony

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  • Mon, Feb 22 2016 5:30 PM In reply to

    • Rihafilm
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    Re: Colour change after 8.5 install (LUT issue?)

    any news on this issue?

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  • Mon, Feb 22 2016 5:36 PM In reply to

    Re: Colour change after 8.5 install (LUT issue?)

    Good thing we work mainly on TV content. :-)

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  • Wed, May 11 2016 2:11 PM In reply to

    • ck123
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    Re: Colour change after 8.5 install (LUT issue?)

    *Bump*

    Has there been any updates at all regarding this issue? Are all revisions of 8.5.x suffering from this illness? We noticed it when we went to output a show in a room that had been upgraded to v8.5. Up this point the show had only been worked on in rooms with 8.4.5. Opened the project and BAM!! WHAT HAPPENED TO THE COLOR!?! THIS WAS FINE YESTERDAY!!!

    Browsing the forum is broken but a search turned up this post with our exact issue. But, the last post was from February and this is May. So, news? Being worked on? Getting fixed in next release? Don't use any version of Avid after 8.4.5? Anything?

    Charles

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  • Thu, May 12 2016 11:28 PM In reply to

    • Glenno
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    Re: Colour change after 8.5 install (LUT issue?)

    I've noticed the same problem when using the LUT effect. There's a big difference in levels between v8.4 and v8.5. I'm using a LUT as a legaliser from http://legalluts.com - they supply two different LUTs, one for v8.4 and another for v8.5, obviously something has changed between versions.

    I've also expermented with various film look LUTs and it appears v8.4 has the correct levels, in v8.5 there is a lot more (too much) contrast.

  • Fri, May 20 2016 12:58 PM In reply to

    • ck123
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    Re: Colour change after 8.5 install (LUT issue?)

    Anyone know if this is fixed in 8.5.3? I don't see a mention in the read me.

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  • Sun, May 22 2016 8:39 PM In reply to

    • BarkinMadd
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    Re: Colour change after 8.5 install (LUT issue?)

    I don't believe it is fixed yet in 8.5.3. 

    MC 2021.6 | QT 7.7.9 | Continuum 2021 | Sapphire 2021 | Mocha Pro 2021 | Titler Pro 7.7 | Windows 10 Pro x64 (21H1) | System: Asus x299, i9-7940X (4.1GHz... [view my complete system specs]

    Steve

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