Hello! Thank you for the replies! It's good to know several ways to do one thing.
But what if need to use an equation like the one provided in arri technical papers? Is there a way of putting this in form of an expression? Thanks for info! All the best Stepan > On 3 Aug 2015, at 09:40, Schneider, Abraham <[email protected]> wrote: > > No need to export these curves first and use a color lookup node. Just use > the ‘colorspace’ node with the same conversions (1st column) in combination > with the CMS test pattern and generate LUT nodes. (Maybe you need to add a > ‘clamp’ node for some of the curves to get the same results as the Read/Write > colorspace settings. > > Abraham > > > Von: [email protected] > [mailto:[email protected]] Im Auftrag von Pat Wong > Gesendet: Freitag, 31. Juli 2015 10:57 > An: Nuke user discussion > Betreff: Re: [Nuke-users] Exporting a LUT from OCIO > > Stephen > > If you want to get the lut or curve out of nukes internal conversions. The > ones in the LUT tab of Project settings.. You can just export out the curve, > by selecting it and then choose generate curve.. > > This will convert it into a keyframed curve which you can select and copy > into a color lookup node... You can then use the CMS generate pattern and > export lut workflow that Deke described above. > > CMSTestPattern > Color lookup with your curve copied into > GenerateLut > > > > Pat > > > > > Kind Regards > > > Patrick Wong > 077961 35224 > www.wahwahdigital.com > > > On 30 July 2015 at 20:41, Deke Kincaid <[email protected]> wrote: > It is easy to convert them but why do you need to? Resolve has a set of VFX > luts which can already do most of this for you. The only main difference you > have to remember in Resolve is that all their rec709 luts are actually legal > where ours our extended. So you need to compensate for that one one end or > the other. > > To answer your question though you can convert most color operations to Luts > by doing the following nodes: > > CMSTestPattern > add any number of color operations, colorspace node, OCIOFileTransform, etc... > GenerateLut > > ᐧ > > -- > Deke Kincaid > Media & Entertainment OEM Development Manager > The Foundry > Skype: dekekincaid > Tel: (310) 399 4555 - Mobile: (310) 883 4313 > Web: www.thefoundry.co.uk > Email: [email protected] > > On Thu, Jul 30, 2015 at 12:16 PM, motion artist <[email protected]> > wrote: > Hell Deke > > But how do I export nukes inbuilt Luts to use in resolve, or how do I > actually use any of the luts of the OCIO spec that I can find on github? I'm > not really good with programming, should really brush up on that since i'm > starting to use nuke, but what the hell do I do with this: > https://github.com/imageworks/OpenColorIO-Configs/blob/master/nuke-default/luts/alexalogc.spi1d > > > How do I get it in form of a .cube > > Thanks for the input > > Stepan > > On Wed, Jul 29, 2015 at 12:53 AM, Deke Kincaid <[email protected]> wrote: > ᐧ > Hi Stepan > > Your best bet for going back and fourth with Resolve is to use Cineon Log > footage. If you use rec709 then you need to make it is in legal which > resolve's rec709 is where Nuke's rec709 is always full range. > > Also are they just 1d luts with tone curve transformations or are there any > color matrix trasforms being done under the hood in nuke? > > Most of the time it is just an expression converting the colorspace (1d > lookup). If you are using .ari files then there is a whole mess of other > things in the debayer & colorspace conversion. > > -- > Deke Kincaid > Media & Entertainment OEM Development Manager > The Foundry > Skype: dekekincaid > Tel: (310) 399 4555 - Mobile: (310) 883 4313 > Web: www.thefoundry.co.uk > Email: [email protected] > > > > Abraham Schneider > Head of VFX pipeline / VFX Supervisor > > > > ARRI Media GmbH > Türkenstr. 89, 80799 München > Phone +49 89 3809-1096 > > EMail [email protected] > www.arri.de/arrimedia > > Click here to visit us on Facebook! > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > > Get all the latest information from www.arri.de/arrimedia, Facebook > > ARRI Media GmbH > Sitz: München - Registergericht: Amtsgericht München > Handelsregisternummer: HRB 69396 > Geschäftsführer: Franz Kraus; Dr. Jörg Pohlman; Josef Reidinger > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
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