Yes, that's the east way of doing it.
But what I want is the artist-friendliest way of doing it. And that
would be to choose a colorspace directly from the read and write nodes.
And I also want that LUT to be expressed as a formula, not as a list of
value pairs.
I'm working on it.
Thanks.
On 30/10/2012 13:56, Schneider, Abraham wrote:
sorry, mixed up the values:
whitepoint has to be 64/1023 (or 16/255)
blackpoint was correct: 940/1023 (or 235/255)
Abraham
Am 30.10.2012 um 18:47 schrieb Schneider, Abraham:
> Should be a two-step/node solution:
>
> - import it with colorspace set to linear (to avoid any conversion)
> - add a Grade node, set the blackpoint to 16/1023 and whitepoint to
940/1023 (this expands the limited range to full range)
> - add a colorspace with 'in' set to 'rec709' and 'out' set to
'linear' (removes the rec709 gamma)
>
> if you want to put this into LUT, use the CMSTestPattern, apply the
nodes above and export a LUT with the GenerateLUT node.
>
> Abraham
>
>
> Am 30.10.2012 um 15:55 schrieb Francois Lord:
>
>> Hi.
>>
>> Does anyone has a formula for a LUT in Nuke to convert REC709
limited range to linear? I know I can sample a ramp and create a
curve, but I would prefer a formula.
>>
>> Thanks.
>>
>> Francois.
>>
>
> Abraham Schneider
> Head of VFX pipeline / VFX Supervisor
>
>
> ARRI Film & TV Services GmbH
> Tuerkenstr. 89
> D-80799 Muenchen / Germany
>
> Phone +49 89 3809-1269
>
> EMail [email protected]
> www.arri.de/filmtv
> _______________________________________________
>> Nuke-users mailing list
>> [email protected], http://forums.thefoundry.co.uk/
>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>
> ________________________________
>
>
> ARRI Film & TV Services GmbH
> Sitz: München Registergericht: Amtsgericht München
> Handelsregisternummer: HRB 69396
> Geschäftsführer: Franz Kraus, Dr. Martin Prillmann, Josef Reidinger
> _______________________________________________
> 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
